fix(runtime-core): handle non-isomorphic block element update by KazariEX · Pull Request #15002 · vuejs/core

KazariEX · 2026-06-24T07:46:28Z

fix #6385

Summary by CodeRabbit

Bug Fixes
- Fixed rendering updates where placeholder output was not fully replaced during dynamic/compiled updates, ensuring the final DOM matches the fully resolved UI.
- Improved renderer fallback behavior when block metadata is inconsistent, forcing a full children diff to keep nested elements, text, and classes in sync.
Tests
- Added a new optimized-mode test to verify correct DOM results when re-rendering from placeholder content to a compiled-style vnode tree.

coderabbitai · 2026-06-24T07:46:42Z

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: deed530e-abf6-4e5c-8e2d-09936c92dd94

📥 Commits

Reviewing files that changed from the base of the PR and between c33152b and 7042602.

📒 Files selected for processing (2)

packages/runtime-core/__tests__/rendererOptimizedMode.spec.ts
packages/runtime-core/src/renderer.ts

🚧 Files skipped from review as they are similar to previous changes (2)

packages/runtime-core/tests/rendererOptimizedMode.spec.ts
packages/runtime-core/src/renderer.ts

📝 Walkthrough

Walkthrough

patchElement now falls back to a full children diff when dynamicChildren metadata is missing or mismatched. A new optimized-mode test covers the compiled render path.

Changes

patchElement full-diff fallback for mismatched dynamicChildren

Layer / File(s)	Summary
Children patching branch in patchElement `packages/runtime-core/src/renderer.ts`	`patchElement` now checks old and new `dynamicChildren` before using `patchBlockChildren`, falls back to `patchChildren` when they differ, and clears optimized state after the full diff.
Regression test for compiled-slot patching `packages/runtime-core/__tests__/rendererOptimizedMode.spec.ts`	Adds a test that re-renders a placeholder into an `openBlock()`/`createElementBlock()` tree with `PatchFlags.CLASS` and `PatchFlags.TEXT` and asserts the DOM becomes the fully updated structure.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested labels

:hammer: p3-minor-bug

Suggested reviewers

edison1105

Poem

🐰 A block hopped out to take a peek,
But stale children made it squeak.
So full diff came with a gentle pat,
And the DOM straightened out just like that.
Two carrots up, the test passed through—
A tidy patch, bright and new.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	Title is concise and accurately summarizes the runtime-core block update fix.
Linked Issues check	✅ Passed	The renderer change and new test address `#6385` by deopting unstable block updates and preventing the oldChildren error.
Out of Scope Changes check	✅ Passed	Only a targeted runtime-core fix and regression test were added, with no unrelated changes.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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pkg-pr-new · 2026-06-24T07:47:35Z

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commit: 7042602

github-actions · 2026-06-24T07:47:42Z

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	106 kB (+80 B)	40.2 kB (+32 B)	36.2 kB (+111 B)
vue.global.prod.js	165 kB (+80 B)	60.2 kB (+37 B)	53.6 kB (+58 B)

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	48.8 kB (+80 B)	19 kB (+28 B)	17.4 kB (+28 B)
createApp	57 kB (+80 B)	22 kB (+28 B)	20.1 kB (+18 B)
createSSRApp	61.3 kB (+80 B)	23.8 kB (+25 B)	21.7 kB (+21 B)
defineCustomElement	63.2 kB (+80 B)	24 kB (+29 B)	21.8 kB (+28 B)
overall	71.8 kB (+80 B)	27.4 kB (+28 B)	25 kB (+20 B)

coderabbitai

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (1)

packages/runtime-core/src/renderer.ts (1)

858-906: 🩺 Stability & Availability | 🔴 Critical | ⚡ Quick win

Separate non-isomorphic blocks from normal leaf nodes, and route HMR through the full-diff branch.

Line 866 can null dynamicChildren for HMR, but Line 881 still branches only on isFullDiffRequired; equal-length HMR blocks then call patchBlockChildren(..., dynamicChildren!) with null. Also, the current predicate is true when both vnodes simply have no nested dynamicChildren, forcing full children/props diffs for normal optimized dynamic leaf nodes.

Proposed fix

-    const isFullDiffRequired = !(
-      dynamicChildren &&
-      n1.dynamicChildren &&
-      n1.dynamicChildren.length === dynamicChildren.length
-    )
+    const isNonIsomorphicBlock = !!(
+      (dynamicChildren || n1.dynamicChildren) &&
+      (!dynamicChildren ||
+        !n1.dynamicChildren ||
+        n1.dynamicChildren.length !== dynamicChildren.length)
+    )
+    const forceFullDiff =
+      isNonIsomorphicBlock || (__DEV__ && isHmrUpdating)
 
     // HMR updated, force full diff
-    if (isFullDiffRequired || (__DEV__ && isHmrUpdating)) {
+    if (forceFullDiff) {
       patchFlag = 0
       optimized = false
       dynamicChildren = null
     }
@@
-    if (isFullDiffRequired) {
+    if (dynamicChildren) {
+      patchBlockChildren(
+        n1.dynamicChildren!,
+        dynamicChildren,
+        el,
+        parentComponent,
+        parentSuspense,
+        resolveChildrenNamespace(n2, namespace),
+        slotScopeIds,
+      )
+      if (__DEV__) {
+        // necessary for HMR
+        traverseStaticChildren(n1, n2)
+      }
+    } else if (!optimized) {
       patchChildren(
         n1,
         n2,
@@
         slotScopeIds,
         false,
       )
-    } else {
-      patchBlockChildren(
-        n1.dynamicChildren!,
-        dynamicChildren!,
-        el,
-        parentComponent,
-        parentSuspense,
-        resolveChildrenNamespace(n2, namespace),
-        slotScopeIds,
-      )
-      if (__DEV__) {
-        // necessary for HMR
-        traverseStaticChildren(n1, n2)
-      }
     }

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@packages/runtime-core/src/renderer.ts` around lines 858 - 906, Separate
non-isomorphic blocks from normal optimized leaf nodes, and ensure HMR always
uses the full-diff path. Update the logic around isFullDiffRequired in
renderer.ts so it only forces a full diff for user-wrapped/non-isomorphic
blocks, not for ordinary vnodes that simply lack dynamicChildren, and keep HMR
from falling through to patchBlockChildren when dynamicChildren has been nulled.
Use the existing patchChildren, patchBlockChildren, and isHmrUpdating branches
to route HMR updates through the full-diff branch and avoid calling
patchBlockChildren with null dynamicChildren.

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Outside diff comments:
In `@packages/runtime-core/src/renderer.ts`:
- Around line 858-906: Separate non-isomorphic blocks from normal optimized leaf
nodes, and ensure HMR always uses the full-diff path. Update the logic around
isFullDiffRequired in renderer.ts so it only forces a full diff for
user-wrapped/non-isomorphic blocks, not for ordinary vnodes that simply lack
dynamicChildren, and keep HMR from falling through to patchBlockChildren when
dynamicChildren has been nulled. Use the existing patchChildren,
patchBlockChildren, and isHmrUpdating branches to route HMR updates through the
full-diff branch and avoid calling patchBlockChildren with null dynamicChildren.

ℹ️ Review info

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Run ID: b1ae86aa-2282-4b74-aeb1-66b53d70e03b

📥 Commits

Reviewing files that changed from the base of the PR and between 325eb1d and 303de0e.

📒 Files selected for processing (2)

packages/runtime-core/__tests__/rendererOptimizedMode.spec.ts
packages/runtime-core/src/renderer.ts

edison1105 · 2026-06-25T01:05:09Z

The safer fix is to deopt before patching when the old and new dynamicChildren metadata cannot be matched.

dynamicChildren is only valid for positional patching when both sides come from the same stable block shape. In this case, user-wrapped compiled output can switch from a manual vnode to a compiled block vnode, so only falling back for children is not enough: root props may still go through the patch-flag fast path and leave stale attrs behind.

By setting patchFlag = 0, optimized = false, and dynamicChildren = null up front, the update follows the normal full-diff path for both children and props.

see 7042602

edison1105 · 2026-06-25T01:06:28Z

/ecosystem-ci run

vue-bot · 2026-06-25T01:25:53Z

📝 Ran ecosystem CI: Open

suite	result	latest scheduled
radix-vue	❌ failure	❌ failure
quasar	✅ success	✅ success
primevue	✅ success	✅ success
language-tools	✅ success	✅ success
pinia	✅ success	✅ success
vant	✅ success	✅ success
test-utils	✅ success	✅ success
vitepress	✅ success	❌ failure
router	✅ success	✅ success
nuxt	✅ success	✅ success
vue-macros	✅ success	✅ success
vuetify	✅ success	❌ failure
vue-i18n	✅ success	✅ success
vueuse	✅ success	✅ success
vite-plugin-vue	✅ success	❌ failure
vue-simple-compiler	✅ success	❌ failure

This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [vue](https://vuejs.org/) ([source](https://github.com/vuejs/core)) | [`3.5.38` → `3.5.39`](https://renovatebot.com/diffs/npm/vue/3.5.38/3.5.39) | ![age](https://developer.mend.io/api/mc/badges/age/npm/vue/3.5.39?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/vue/3.5.38/3.5.39?slim=true) | --- ### Release Notes <details> <summary>vuejs/core (vue)</summary> ### [`v3.5.39`](https://github.com/vuejs/core/blob/HEAD/CHANGELOG.md#3539-2026-06-25) [Compare Source](vuejs/core@v3.5.38...v3.5.39) ##### Bug Fixes - **compiler-core:** correct filter rewrite recursion ([#14959](vuejs/core#14959)) ([be7ce31](vuejs/core@be7ce31)) - **hydration:** force patch dynamic props when hydrating ([#9083](vuejs/core#9083)) ([024cf06](vuejs/core@024cf06)), closes [#9033](vuejs/core#9033) - **hydration:** respect data-allow-mismatch on conditional branches ([#12801](vuejs/core#12801)) ([164af63](vuejs/core@164af63)), closes [#12782](vuejs/core#12782) - **reactivity:** avoid triggering effects when set fails ([#14964](vuejs/core#14964)) ([e450973](vuejs/core@e450973)) - **runtime-core:** handle non-isomorphic block element update ([#15002](vuejs/core#15002)) ([932ddd0](vuejs/core@932ddd0)), closes [#6385](vuejs/core#6385) - **runtime-core:** normalize function children for elements and Teleport ([#9108](vuejs/core#9108)) ([2f374cd](vuejs/core@2f374cd)), closes [#9107](vuejs/core#9107) - **runtime-core:** pause tracking when invoking function refs ([#14985](vuejs/core#14985)) ([3ac052b](vuejs/core@3ac052b)) - **runtime-core:** preserve once event listener name ([#8341](vuejs/core#8341)) ([87b73b6](vuejs/core@87b73b6)), closes [#8342](vuejs/core#8342) - **runtime-dom:** preserve option modifier event names ([#8338](vuejs/core#8338)) ([4b659e6](vuejs/core@4b659e6)), closes [#8334](vuejs/core#8334) - **ssr:** dedupe inherited scope ids during vnode rendering ([#15005](vuejs/core#15005)) ([027da6b](vuejs/core@027da6b)), closes [#12159](vuejs/core#12159) [#12175](vuejs/core#12175) - **ssr:** resolve nested async teleport content ([#9431](vuejs/core#9431)) ([31d0f23](vuejs/core@31d0f23)), closes [#6207](vuejs/core#6207) - **teleport:** handle teleport unmount edge case ([#12705](vuejs/core#12705)) ([671997a](vuejs/core@671997a)), closes [#12702](vuejs/core#12702) - **types:** support named tuple emits ([#12676](vuejs/core#12676)) ([232f402](vuejs/core@232f402)), closes [#12673](vuejs/core#12673) - **types:** validate defineModel defaults ([#14968](vuejs/core#14968)) ([747f57e](vuejs/core@747f57e)), closes [#14966](vuejs/core#14966) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - At any time (no schedule defined) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://github.com/renovatebot/renovate).  Co-authored-by: leuwen-lc <[email protected]> Reviewed-on: https://codeberg.org/leuwen-lc/rhdemo/pulls/180

[cb skip] vue is a dev dependency of @changebot/widgets-vue. The peer range stays ^3.0.0. == [3.5.41](vuejs/core@v3.5.40...v3.5.41) (2026-08-05) == Bug Fixes * **compiler-core:** preserve vnode lifecycle in stable v-for ([#11682](vuejs/core#11682)) ([02421cd](vuejs/core@02421cd)), closes [#9239](vuejs/core#9239) [#12569](vuejs/core#12569) * **compiler-sfc:** handle transformed template AST after cache invalidation ([#15136](vuejs/core#15136)) ([a4440c0](vuejs/core@a4440c0)), closes [#15126](vuejs/core#15126) [#15128](vuejs/core#15128) * **custom-element:** preserve nested async mount order ([#15154](vuejs/core#15154)) ([71f9ff5](vuejs/core@71f9ff5)), closes [#15153](vuejs/core#15153) * **custom-element:** warn when props override native properties ([#12125](vuejs/core#12125)) ([22b53ea](vuejs/core@22b53ea)), closes [#12124](vuejs/core#12124) * **runtime-core:** avoid re-fetching resource props with unchanged values ([#15105](vuejs/core#15105)) ([a7513a1](vuejs/core@a7513a1)) * **runtime-core:** restore SSR setup state when handling async setup result ([#15114](vuejs/core#15114)) ([b6191cb](vuejs/core@b6191cb)), closes [#15113](vuejs/core#15113) * **scheduler:** avoid stack overflow when flushing very large post cb arrays ([#15143](vuejs/core#15143)) ([c04a45d](vuejs/core@c04a45d)), closes [#15142](vuejs/core#15142) * **slots:** handle nullish v-bind slot props ([#15177](vuejs/core#15177)) ([2506700](vuejs/core@2506700)) * **ssr:** normalize hidden states during hydration ([#13125](vuejs/core#13125)) ([4e467d7](vuejs/core@4e467d7)) * **transition:** support transition to teleport component child ([#11959](vuejs/core#11959)) ([77061fe](vuejs/core@77061fe)), closes [#11910](vuejs/core#11910) * **types:** preserve defineModel inference with factory defaults ([#15097](vuejs/core#15097)) ([0516c43](vuejs/core@0516c43)), closes [#15096](vuejs/core#15096) * **v-model:** preserve text input before hydration ([#14411](vuejs/core#14411)) ([2468464](vuejs/core@2468464)), closes [#14403](vuejs/core#14403) == [3.5.40](vuejs/core@v3.5.39...v3.5.40) (2026-07-16) == Bug Fixes * **compiler-core:** avoid leaking slot branch keys ([#15051](vuejs/core#15051)) ([20c9d26](vuejs/core@20c9d26)), closes [#15048](vuejs/core#15048) * **hydration:** pass namespace when patching dynamic props ([#15082](vuejs/core#15082)) ([e0d2723](vuejs/core@e0d2723)), closes [#15081](vuejs/core#15081) [#15050](vuejs/core#15050) * **reactivity:** handle effect removal during scope stop ([#15084](vuejs/core#15084)) ([378f978](vuejs/core@378f978)), closes [#15083](vuejs/core#15083) * **runtime-core:** skip lazy hydration for detached roots ([#15092](vuejs/core#15092)) ([97f3525](vuejs/core@97f3525)), closes [#15091](vuejs/core#15091) * **runtime-core:** unwind dangling blocks when slot content throws ([#15071](vuejs/core#15071)) ([ddc132d](vuejs/core@ddc132d)), closes [#15070](vuejs/core#15070) * **runtime-dom:** respect current select model type ([#15010](vuejs/core#15010)) ([eb89e93](vuejs/core@eb89e93)), closes [#15009](vuejs/core#15009) * **server-renderer:** handle errors in optimized component renders ([#12601](vuejs/core#12601)) ([474907c](vuejs/core@474907c)), closes [#12575](vuejs/core#12575) * **server-renderer:** remove package dependency cycle ([#15063](vuejs/core#15063)) ([4d35eca](vuejs/core@4d35eca)) * **shared:** prevent SSR comment escaping from creating closing delimiters ([#15045](vuejs/core#15045)) ([bd962bb](vuejs/core@bd962bb)) * **types:** don't constrain component $el type to Element ([#15040](vuejs/core#15040)) ([164460a](vuejs/core@164460a)) == [3.5.39](vuejs/core@v3.5.38...v3.5.39) (2026-06-25) == Bug Fixes * **compiler-core:** correct filter rewrite recursion ([#14959](vuejs/core#14959)) ([be7ce31](vuejs/core@be7ce31)) * **hydration:** force patch dynamic props when hydrating ([#9083](vuejs/core#9083)) ([024cf06](vuejs/core@024cf06)), closes [#9033](vuejs/core#9033) * **hydration:** respect data-allow-mismatch on conditional branches ([#12801](vuejs/core#12801)) ([164af63](vuejs/core@164af63)), closes [#12782](vuejs/core#12782) * **reactivity:** avoid triggering effects when set fails ([#14964](vuejs/core#14964)) ([e450973](vuejs/core@e450973)) * **runtime-core:** handle non-isomorphic block element update ([#15002](vuejs/core#15002)) ([932ddd0](vuejs/core@932ddd0)), closes [#6385](vuejs/core#6385) * **runtime-core:** normalize function children for elements and Teleport ([#9108](vuejs/core#9108)) ([2f374cd](vuejs/core@2f374cd)), closes [#9107](vuejs/core#9107) * **runtime-core:** pause tracking when invoking function refs ([#14985](vuejs/core#14985)) ([3ac052b](vuejs/core@3ac052b)) * **runtime-core:** preserve once event listener name ([#8341](vuejs/core#8341)) ([87b73b6](vuejs/core@87b73b6)), closes [#8342](vuejs/core#8342) * **runtime-dom:** preserve option modifier event names ([#8338](vuejs/core#8338)) ([4b659e6](vuejs/core@4b659e6)), closes [#8334](vuejs/core#8334) * **ssr:** dedupe inherited scope ids during vnode rendering ([#15005](vuejs/core#15005)) ([027da6b](vuejs/core@027da6b)), closes [#12159](vuejs/core#12159) [#12175](vuejs/core#12175) * **ssr:** resolve nested async teleport content ([#9431](vuejs/core#9431)) ([31d0f23](vuejs/core@31d0f23)), closes [#6207](vuejs/core#6207) * **teleport:** handle teleport unmount edge case ([#12705](vuejs/core#12705)) ([671997a](vuejs/core@671997a)), closes [#12702](vuejs/core#12702) * **types:** support named tuple emits ([#12676](vuejs/core#12676)) ([232f402](vuejs/core@232f402)), closes [#12673](vuejs/core#12673) * **types:** validate defineModel defaults ([#14968](vuejs/core#14968)) ([747f57e](vuejs/core@747f57e)), closes [#14966](vuejs/core#14966) == [3.5.38](vuejs/core@v3.5.37...v3.5.38) (2026-06-11) == [3.5.37](vuejs/core@v3.5.36...v3.5.37) (2026-06-11) == [3.5.36](vuejs/core@v3.5.35...v3.5.36) (2026-06-11) == Bug Fixes * **compiler-core:** avoid crash on CDATA at the document root ([#14916](vuejs/core#14916)) ([0ea17e2](vuejs/core@0ea17e2)) * **compiler-core:** prefix dynamic keys on v-memo elements ([#14922](vuejs/core#14922)) ([68e978e](vuejs/core@68e978e)), closes [#14920](vuejs/core#14920) * **compiler-sfc:** handle vue-ignore on leading intersection/union type ([#14950](vuejs/core#14950)) ([0dcd225](vuejs/core@0dcd225)), closes [#12254](vuejs/core#12254) * **compiler-sfc:** respect var hoisting in props destructure ([48ad452](vuejs/core@48ad452)) * **reactivity:** preserve watch callback return value when wrapped for `once: true` ([#14902](vuejs/core#14902)) ([450a8a8](vuejs/core@450a8a8)) * **runtime-core:** add dev warning for silent catch in compat mode and fix test description typo ([#14891](vuejs/core#14891)) ([db3e117](vuejs/core@db3e117)) * **runtime-core:** force model update when reverted before sync ([#14897](vuejs/core#14897)) ([7f76378](vuejs/core@7f76378)), closes [#13524](vuejs/core#13524) * **runtime-core:** skip async component callbacks after unmount ([#14911](vuejs/core#14911)) ([5300ead](vuejs/core@5300ead)) * **transition:** avoid move transition for hidden v-show group children ([#14895](vuejs/core#14895)) ([c11f6ee](vuejs/core@c11f6ee)), closes [#14894](vuejs/core#14894) * **watch:** trigger immediate callback for empty sources ([#14914](vuejs/core#14914)) ([1f2ca7e](vuejs/core@1f2ca7e)), closes [#14898](vuejs/core#14898) == [3.5.35](vuejs/core@v3.5.34...v3.5.35) (2026-05-27) == Bug Fixes * **compiler-core:** avoid double processing v-for keys with v-memo ([#14861](vuejs/core#14861)) ([34a0ded](vuejs/core@34a0ded)), closes [#14859](vuejs/core#14859) * **compiler-sfc:** resolve top-level exports from files registered as global types ([#14805](vuejs/core#14805)) ([3d077f2](vuejs/core@3d077f2)), closes [nuxt/nuxt#33694](nuxt/nuxt#33694) * **runtime-core:** avoid repeated hydration mismatch checks ([#14857](vuejs/core#14857)) ([170fc95](vuejs/core@170fc95)), closes [#14855](vuejs/core#14855) * **runtime-core:** skip idle persisted transition hooks in keep-alive moves ([#14865](vuejs/core#14865)) ([80fc139](vuejs/core@80fc139)), closes [#14031](vuejs/core#14031) * **server-renderer:** propagate sync errors from `ssrRenderSuspense` ([#14804](vuejs/core#14804)) ([4760997](vuejs/core@4760997)), closes [nuxt/nuxt#28162](nuxt/nuxt#28162) * **teleport:** skip child unmount when pending mount discarded ([#14876](vuejs/core#14876)) ([#14877](vuejs/core#14877)) ([584beb1](vuejs/core@584beb1)) == Performance Improvements * **reactivity:** skip type checks for cached proxies ([#14860](vuejs/core#14860)) ([5734fe9](vuejs/core@5734fe9)) * **runtime-dom:** optimize array event handler dispatch ([#14828](vuejs/core#14828)) ([bb18dc8](vuejs/core@bb18dc8)) * **server-renderer:** avoid materializing iterables in ssrRenderList ([#14821](vuejs/core#14821)) ([1b7a2cc](vuejs/core@1b7a2cc)) == [3.5.34](vuejs/core@v3.5.33...v3.5.34) (2026-05-06) == Bug Fixes * **compiler-sfc:** infer Vue ref wrapper types when source is unresolvable ([#14758](vuejs/core#14758)) ([7f46fd4](vuejs/core@7f46fd4)), closes [#14729](vuejs/core#14729) * **compiler-sfc:** preserve hash hrefs on `<image>` elements ([#14756](vuejs/core#14756)) ([090b2e3](vuejs/core@090b2e3)) * **compiler-sfc:** resolve type re-exports inside declare global ([#14766](vuejs/core#14766)) ([acfffe3](vuejs/core@acfffe3)) * **reactivity:** prevent orphan effect when created in a stopped scope ([#14778](vuejs/core#14778)) ([c8e2d4a](vuejs/core@c8e2d4a)), closes [#14777](vuejs/core#14777) * **runtime-core:** avoid symbol coercion during props validation ([#8539](vuejs/core#8539)) ([23d4fb5](vuejs/core@23d4fb5)), closes [#8487](vuejs/core#8487) * **suspense:** avoid DOM leak with out-in transition in v-if fragment ([#14762](vuejs/core#14762)) ([9667e0d](vuejs/core@9667e0d)), closes [#14761](vuejs/core#14761) == [3.5.33](vuejs/core@v3.5.32...v3.5.33) (2026-04-22) == Bug Fixes * **compiler-sfc:** handle nested :deep in selector pseudos ([#14725](vuejs/core#14725)) ([bb9d265](vuejs/core@bb9d265)), closes [#14724](vuejs/core#14724) * **reactivity:** unlink effect scopes on out-of-order off ([#14734](vuejs/core#14734)) ([e7659be](vuejs/core@e7659be)), closes [#14733](vuejs/core#14733) * **runtime-dom:** preserve textarea resize dimensions ([#14747](vuejs/core#14747)) ([11fb2fd](vuejs/core@11fb2fd)), closes [#14741](vuejs/core#14741) * **teleport:** don't move teleport children if not mounted ([#14702](vuejs/core#14702)) ([6a61f44](vuejs/core@6a61f44)), closes [#14701](vuejs/core#14701) * **transition:** preserve placeholder for conditional explicit default slots ([#14748](vuejs/core#14748)) ([45990ce](vuejs/core@45990ce)), closes [#14727](vuejs/core#14727) == [3.5.32](vuejs/core@v3.5.31...v3.5.32) (2026-04-03) == Bug Fixes * **runtime-core:** prevent currentInstance leak into sibling render during async setup re-entry ([#14668](vuejs/core#14668)) ([f166353](vuejs/core@f166353)), closes [#14667](vuejs/core#14667) * **teleport:** handle updates before deferred mount ([#14642](vuejs/core#14642)) ([32b44f1](vuejs/core@32b44f1)), closes [#14640](vuejs/core#14640) * **types:** allow customRef to have different getter/setter types ([#14639](vuejs/core#14639)) ([e20ddb0](vuejs/core@e20ddb0)) * **types:** use private branding for shallowReactive ([#14641](vuejs/core#14641)) ([302c47a](vuejs/core@302c47a)), closes [#14638](vuejs/core#14638) [#14493](vuejs/core#14493) == Reverts * Revert "fix(server-renderer): cleanup component effect scopes after SSR render" (#14674) ([219d83b](vuejs/core@219d83b)), closes [#14674](vuejs/core#14674) [#14669](vuejs/core#14669) == [3.5.31](vuejs/core@v3.5.30...v3.5.31) (2026-03-25) == Bug Fixes * **compiler-sfc:** allow Node.js subpath imports patterns in asset urls ([#13045](vuejs/core#13045)) ([95c3356](vuejs/core@95c3356)), closes [#9919](vuejs/core#9919) * **compiler-sfc:** support template literal as defineModel name ([#14622](vuejs/core#14622)) ([bd7eef0](vuejs/core@bd7eef0)), closes [#14621](vuejs/core#14621) * **reactivity:** normalize toRef property keys before dep lookup + improve types ([#14625](vuejs/core#14625)) ([1bb28d0](vuejs/core@1bb28d0)), closes [#12427](vuejs/core#12427) [#12431](vuejs/core#12431) * **runtime-core:** invalidate detached v-for memo vnodes after unmount ([#14624](vuejs/core#14624)) ([560def4](vuejs/core@560def4)), closes [#12708](vuejs/core#12708) [#12710](vuejs/core#12710) * **runtime-core:** preserve nullish event handlers in mergeProps ([#14550](vuejs/core#14550)) ([5725222](vuejs/core@5725222)) * **runtime-core:** prevent merging model listener when value is null or undefined ([#14629](vuejs/core#14629)) ([b39e032](vuejs/core@b39e032)) * **runtime-dom:** defer teleport mount/update until suspense resolves ([#8619](vuejs/core#8619)) ([88ed045](vuejs/core@88ed045)), closes [#8603](vuejs/core#8603) * **runtime-dom:** handle activeElement check in Shadow DOM for v-model ([#14196](vuejs/core#14196)) ([959ded2](vuejs/core@959ded2)) * **server-renderer:** cleanup component effect scopes after SSR render ([#14548](vuejs/core#14548)) ([862f11e](vuejs/core@862f11e)) * **suspense:** avoid unmount activeBranch twice if wrapped in transition ([#9392](vuejs/core#9392)) ([908c6ad](vuejs/core@908c6ad)), closes [#7966](vuejs/core#7966) * **suspense:** update suspense vnode's el during branch self-update ([#12922](vuejs/core#12922)) ([a2c1700](vuejs/core@a2c1700)), closes [#12920](vuejs/core#12920) * **transition:** skip enter guard while hmr updating ([#14611](vuejs/core#14611)) ([be0a2f1](vuejs/core@be0a2f1)), closes [#14608](vuejs/core#14608) * **types:** prevent shallowReactive marker from leaking into value unions ([#14493](vuejs/core#14493)) ([3b561db](vuejs/core@3b561db)), closes [#14490](vuejs/core#14490) == [3.5.30](vuejs/core@v3.5.29...v3.5.30) (2026-03-09) == Bug Fixes * **compat:** add `entities` to @vue/compat deps to fix CJS edge cases ([#12514](vuejs/core#12514)) ([e725a67](vuejs/core@e725a67)), closes [#10609](vuejs/core#10609) * **custom-element:** ensure child component styles are injected in correct order before parent styles ([#13374](vuejs/core#13374)) ([1398bf8](vuejs/core@1398bf8)), closes [#13029](vuejs/core#13029) * **custom-element:** properly locate parent when slotted in shadow dom ([#12480](vuejs/core#12480)) ([f06c81a](vuejs/core@f06c81a)), closes [#12479](vuejs/core#12479) * **custom-element:** should properly patch as props for vue custom elements ([#12409](vuejs/core#12409)) ([740983e](vuejs/core@740983e)), closes [#12408](vuejs/core#12408) * **reactivity:** avoid duplicate raw/proxy entries in Set.add ([#14545](vuejs/core#14545)) ([d943612](vuejs/core@d943612)) * **reactivity:** fix reduce on reactive arrays to preserve reactivity ([#12737](vuejs/core#12737)) ([16ef165](vuejs/core@16ef165)), closes [#12735](vuejs/core#12735) * **reactivity:** handle `Set` with initial reactive values edge case ([#12393](vuejs/core#12393)) ([5dc27ca](vuejs/core@5dc27ca)), closes [#8647](vuejs/core#8647) * **runtime-core:** warn about negative number in v-for ([#12308](vuejs/core#12308)) ([9438cc5](vuejs/core@9438cc5)) * **ssr:** prevent watch from firing after async setup await ([#14547](vuejs/core#14547)) ([6cda71d](vuejs/core@6cda71d)), closes [#14546](vuejs/core#14546) * **types:** make generics with runtime props in defineComponent work (fix [#11374](vuejs/core#11374)) ([#13119](vuejs/core#13119)) ([cea3cf7](vuejs/core@cea3cf7)), closes [#13763](vuejs/core#13763) * **types:** narrow useAttrs class/style typing for TSX ([#14492](vuejs/core#14492)) ([bbb8977](vuejs/core@bbb8977)), closes [#14489](vuejs/core#14489) == [3.5.29](vuejs/core@v3.5.28...v3.5.29) (2026-02-24) == Bug Fixes * **runtime-core:** prevent instance leak in withAsyncContext ([#14445](vuejs/core#14445)) ([702284f](vuejs/core@702284f)), closes [nuxt/nuxt#33644](nuxt/nuxt#33644) * **server-renderer:** render className as escaped string ([#14469](vuejs/core#14469)) ([da6690c](vuejs/core@da6690c)) * **transition:** prevent enter if leave is in progress ([#14443](vuejs/core#14443)) ([df059f8](vuejs/core@df059f8)), closes [#12091](vuejs/core#12091) [#12133](vuejs/core#12133) == [3.5.28](vuejs/core@v3.5.27...v3.5.28) (2026-02-09) == Bug Fixes * **transition:** avoid unexpected `cancelled` parameter in transition `done` callback ([#14391](vuejs/core#14391)) ([6798853](vuejs/core@6798853)) * **compiler-sfc:** add resolution trying for `.mts/.cts` files ([#14402](vuejs/core#14402)) ([c09d41f](vuejs/core@c09d41f)), closes [vuejs/router#2611](vuejs/router#2611) * **compiler-sfc:** no params were generated when using withDefaults ([#12823](vuejs/core#12823)) ([b0a1f05](vuejs/core@b0a1f05)), closes [#12822](vuejs/core#12822) * **reactivity:** add `__v_skip` flag to `EffectScope` to prevent reactive conversion ([#14359](vuejs/core#14359)) ([48b7552](vuejs/core@48b7552)), closes [#14357](vuejs/core#14357) * **runtime-core:** avoid retaining el on cached text vnodes during static traversal ([#14419](vuejs/core#14419)) ([4ace79a](vuejs/core@4ace79a)), closes [#14134](vuejs/core#14134) * **runtime-core:** prevent child component updates when style remains unchanged ([#12825](vuejs/core#12825)) ([57866b5](vuejs/core@57866b5)), closes [#12826](vuejs/core#12826) * **runtime-core:** properly handle async component update before resolve ([#11619](vuejs/core#11619)) ([e71c26c](vuejs/core@e71c26c)), closes [#11617](vuejs/core#11617) * **runtime-dom:** handle null/undefined handler in withModifiers ([#14362](vuejs/core#14362)) ([261de54](vuejs/core@261de54)), closes [#14361](vuejs/core#14361) * **teleport:** properly handling disabled teleport target anchor ([#14417](vuejs/core#14417)) ([d7bcd85](vuejs/core@d7bcd85)), closes [#14412](vuejs/core#14412) * **transition-group:** correct move translation under scale via element rect ([#14360](vuejs/core#14360)) ([0243a79](vuejs/core@0243a79)), closes [#14356](vuejs/core#14356) * **useTemplateRef:** don't update setup ref for useTemplateRef key ([#12756](vuejs/core#12756)) ([fc40ca0](vuejs/core@fc40ca0)), closes [#12749](vuejs/core#12749) == [3.5.27](vuejs/core@v3.5.26...v3.5.27) (2026-01-19) == Bug Fixes * **compile-sfc:** correctly handle variable shadowing in for loop for `defineProps` destructuring. ([#14296](vuejs/core#14296)) ([6a1bb50](vuejs/core@6a1bb50)), closes [#14294](vuejs/core#14294) * **compiler-sfc:** handle indexed access types in declare global blocks ([#14260](vuejs/core#14260)) ([e4091fe](vuejs/core@e4091fe)), closes [#14236](vuejs/core#14236) * **compiler-sfc:** use correct scope when resolving indexed access types from external files ([#14297](vuejs/core#14297)) ([f0f0a21](vuejs/core@f0f0a21)), closes [#14292](vuejs/core#14292) * **reactivity:** collection iteration should inherit iterator instance methods ([#12644](vuejs/core#12644)) ([3c8b2fc](vuejs/core@3c8b2fc)), closes [#12615](vuejs/core#12615) * **runtime-core:** skip patching reserved props for custom elements ([#14275](vuejs/core#14275)) ([19cc7e2](vuejs/core@19cc7e2)), closes [#14274](vuejs/core#14274) * **server-renderer:** use ssrRenderClass helper for className attribute ([#14327](vuejs/core#14327)) ([a4708f3](vuejs/core@a4708f3)) * **ssr:** handle v-bind modifiers during render attrs ([#14263](vuejs/core#14263)) ([c2f5964](vuejs/core@c2f5964)), closes [#14262](vuejs/core#14262) == [3.5.26](vuejs/core@v3.5.25...v3.5.26) (2025-12-18) == Bug Fixes * **compat:** fix compat handler of draggable ([#12445](vuejs/core#12445)) ([ed85953](vuejs/core@ed85953)), closes [#12444](vuejs/core#12444) * **compat:** handle v-model deprecation warning with missing appContext ([#14203](vuejs/core#14203)) ([945a543](vuejs/core@945a543)), closes [#14202](vuejs/core#14202) * **compiler-sfc:** demote const reactive bindings used in v-model ([#14214](vuejs/core#14214)) ([e24ff7d](vuejs/core@e24ff7d)), closes [#11265](vuejs/core#11265) [#11275](vuejs/core#11275) * **compiler-ssr:** handle ssr attr fallthrough when preserve whitespace ([#12304](vuejs/core#12304)) ([4783118](vuejs/core@4783118)), closes [#8072](vuejs/core#8072) * **hmr:** handle cached text node update ([#14134](vuejs/core#14134)) ([69ce3c7](vuejs/core@69ce3c7)), closes [#14127](vuejs/core#14127) * **keep-alive:** use resolved component name for async components in cache pruning ([#14212](vuejs/core#14212)) ([dfe667c](vuejs/core@dfe667c)), closes [#14210](vuejs/core#14210) * **runtime-core:** ensure correct anchor el for deeper unresolved async components ([#14182](vuejs/core#14182)) ([f5b3bf2](vuejs/core@f5b3bf2)), closes [#14173](vuejs/core#14173) * **runtime-core:** handle patch stable fragment edge case ([#12411](vuejs/core#12411)) ([94aeb64](vuejs/core@94aeb64)), closes [#12410](vuejs/core#12410) * **runtime-core:** pass component instance to flushPreFlushCbs on unmount ([#14221](vuejs/core#14221)) ([e857e12](vuejs/core@e857e12)), closes [#14215](vuejs/core#14215) == Performance Improvements * **compiler-core:** use binary-search to get line and column ([#14222](vuejs/core#14222)) ([1904053](vuejs/core@1904053)) == [3.5.25](vuejs/core@v3.5.24...v3.5.25) (2025-11-24) == Bug Fixes * **compiler:** share logic for comments and whitespace ([#13550](vuejs/core#13550)) ([2214f7a](vuejs/core@2214f7a)) * **provide:** warn when using `provide` after mounting ([#13954](vuejs/core#13954)) ([247b2c2](vuejs/core@247b2c2)), closes [#13921](vuejs/core#13921) [#13924](vuejs/core#13924) * **reactivity:** correctly wrap iterated array items to preserve their readonly status ([#14120](vuejs/core#14120)) ([301020b](vuejs/core@301020b)) * **reactivity:** toRef edge cases for ref unwrapping ([#12420](vuejs/core#12420)) ([0d2357e](vuejs/core@0d2357e)) * **runtime-core:** keep options API typing intact when expose is used ([#14118](vuejs/core#14118)) ([8f82f23](vuejs/core@8f82f23)), closes [#14117](vuejs/core#14117) [vuejs/language-tools#5069](vuejs/language-tools#5069) * **suspense:** defer clearing fallback vnode el in case it has dirs ([#14080](vuejs/core#14080)) ([c0f63dd](vuejs/core@c0f63dd)), closes [#14078](vuejs/core#14078) == [3.5.24](vuejs/core@v3.5.23...v3.5.24) (2025-11-07) == Reverts * Revert "fix(compiler-core): correctly handle ts type assertions in expression…" (#14062) ([11ec51a](vuejs/core@11ec51a)), closes [#14062](vuejs/core#14062) [#14060](vuejs/core#14060) == [3.5.23](vuejs/core@v3.5.22...v3.5.23) (2025-11-06) == Bug Fixes * **compiler-core:** correctly handle ts type assertions in expressions ([#13397](vuejs/core#13397)) ([e6544ac](vuejs/core@e6544ac)), closes [#13395](vuejs/core#13395) * **compiler-core:** fix v-bind shorthand handling for in-DOM templates ([#13933](vuejs/core#13933)) ([b3cca26](vuejs/core@b3cca26)), closes [#13930](vuejs/core#13930) * **compiler-sfc:** resolve numeric literals and template literals without expressions as static property key ([#13998](vuejs/core#13998)) ([75d44c7](vuejs/core@75d44c7)) * **compiler-ssr:** textarea with v-text directive SSR ([#13975](https://github.com/vuejs/core/issues/13975)) ([006a0c1](vuejs/core@006a0c1)) * **compiler:** using guard instead of non-nullish assertion ([#13982](https://github.com/vuejs/core/issues/13982)) ([dcc6f36](vuejs/core@dcc6f36)) * **custom-element:** batch custom element prop patching ([#13478](https://github.com/vuejs/core/issues/13478)) ([c13e674](vuejs/core@c13e674)), closes [#12619](https://github.com/vuejs/core/issues/12619) * **custom-element:** optimize slot retrieval to avoid duplicates ([#13961](https://github.com/vuejs/core/issues/13961)) ([84ca349](vuejs/core@84ca349)), closes [#13955](https://github.com/vuejs/core/issues/13955) * **hydration:** avoid mismatch during hydrate text with newlines in interpolation ([#9232](https://github.com/vuejs/core/issues/9232)) ([6cbdf78](vuejs/core@6cbdf78)), closes [#9229](https://github.com/vuejs/core/issues/9229) * **runtime-core:** pass props and children to loadingComponent ([#13997](https://github.com/vuejs/core/issues/13997)) ([40c4b2a](vuejs/core@40c4b2a)) * **runtime-dom:** ensure iframe sandbox is handled as an attribute to prevent unintended behavior ([#13950](https://github.com/vuejs/core/issues/13950)) ([5689884](vuejs/core@5689884)), closes [#13946](https://github.com/vuejs/core/issues/13946) * **suspense:** clear placeholder and fallback el after resolve to enable GC ([#13928](https://github.com/vuejs/core/issues/13928)) ([f411c66](vuejs/core@f411c66)) * **transition-group:** use offsetLeft and offsetTop instead of getBoundingClientRect to avoid transform scale affect animation ([#6108](https://github.com/vuejs/core/issues/6108)) ([dc4dd59](vuejs/core@dc4dd59)), closes [#6105](https://github.com/vuejs/core/issues/6105) * **v-model:** handle number modifier on change ([#13959](https://github.com/vuejs/core/issues/13959)) ([8fbe48f](vuejs/core@8fbe48f)), closes [#13958](https://github.com/vuejs/core/issues/13958) Release notes: https://github.com/vuejs/core/blob/main/CHANGELOG.md

fix: handle non-isomorphic block element update

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coderabbitai Bot reviewed Jun 24, 2026

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KazariEX and others added 3 commits June 24, 2026 16:04

refactor: wip

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chore: wip

c33152b

fix(runtime-core): deopt non-isomorphic block updates

7042602

edison1105 added ready to merge The PR is ready to be merged. 🍰 p2-nice-to-have Priority 2: this is not breaking anything but nice to have it addressed. labels Jun 25, 2026

edison1105 merged commit 932ddd0 into vuejs:main Jun 25, 2026
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KazariEX deleted the fix/issue-6385 branch June 25, 2026 08:17

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fix(runtime-core): handle non-isomorphic block element update - #15002

fix(runtime-core): handle non-isomorphic block element update#15002
edison1105 merged 4 commits into
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