SliverMainAxisGroup does not handle scrollOffsetCorrection

Steps to reproduce

Display a SliverList in SliverMainAxisGroup.
Scroll to middle/end of list.
Press an item to unhide elements
Scroll up, list breaks, doesn't show all elements

The example issue is similar to #59819 but on SliverMainAxisGroup.

Expected results

The items display is consistent during the scroll.

Actual results

The scroll position is not consistent.

Code sample

import 'package:flutter/material.dart';

void main() {
  runApp(
    MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Sliver Example'), backgroundColor: Colors.blue),
        body: const _MyAnomalyWidget(),
      ),
    ),
  );
}

class _MyAnomalyWidget extends StatefulWidget {
  const _MyAnomalyWidget();

  @override
  State<_MyAnomalyWidget> createState() => __MyAnomalyWidgetState();
}

class __MyAnomalyWidgetState extends State<_MyAnomalyWidget> {
  bool skip = true;

  @override
  Widget build(BuildContext context) {
    Widget buildItem(BuildContext context, int index) {
      return !skip || index.isEven
          ? InkWell(
              onTap: () => setState(() => skip = !skip),
              child: Card(
                child: ListTile(title: Text('item$index', style: const TextStyle(fontSize: 80))),
              ),
            )
          : Container();
    }

    return CustomScrollView(
      slivers: <Widget>[
        SliverMainAxisGroup(
          slivers: <Widget>[
            SliverList(delegate: SliverChildBuilderDelegate(buildItem, childCount: 30)),
          ],
        ),
      ],
    );
  }
}

Screenshots or Video

Screenshots / Video demonstration

issue.mp4

Logs

Restarted application in 668ms.
D/EGL_emulation(15514): app_time_stats: avg=726.62ms min=0.77ms max=2903.44ms count=4
D/EGL_emulation(15514): app_time_stats: avg=11344.32ms min=11344.32ms max=11344.32ms count=1
D/EGL_emulation(15514): app_time_stats: avg=7.33ms min=1.01ms max=30.22ms count=58
D/EGL_emulation(15514): app_time_stats: avg=12.83ms min=0.91ms max=28.78ms count=58
D/EGL_emulation(15514): app_time_stats: avg=64.03ms min=9.10ms max=1124.57ms count=24
D/EGL_emulation(15514): app_time_stats: avg=89.59ms min=11.72ms max=1535.21ms count=24
D/EGL_emulation(15514): app_time_stats: avg=16.25ms min=7.17ms max=25.81ms count=61
D/EGL_emulation(15514): app_time_stats: avg=14.22ms min=1.27ms max=32.84ms count=58
D/EGL_emulation(15514): app_time_stats: avg=8.02ms min=0.97ms max=178.13ms count=48
D/EGL_emulation(15514): app_time_stats: avg=45.39ms min=1.08ms max=1236.98ms count=39
D/EGL_emulation(15514): app_time_stats: avg=9.85ms min=0.98ms max=25.00ms count=60
D/EGL_emulation(15514): app_time_stats: avg=2.16ms min=0.89ms max=9.06ms count=61
D/EGL_emulation(15514): app_time_stats: avg=17.63ms min=0.88ms max=544.41ms count=48
D/EGL_emulation(15514): app_time_stats: avg=21.86ms min=10.32ms max=119.29ms count=47
D/EGL_emulation(15514): app_time_stats: avg=163.83ms min=17.87ms max=882.79ms count=7
D/EGL_emulation(15514): app_time_stats: avg=69.51ms min=7.27ms max=1348.90ms count=25
D/EGL_emulation(15514): app_time_stats: avg=16.26ms min=7.27ms max=25.79ms count=61
D/EGL_emulation(15514): app_time_stats: avg=15.92ms min=9.89ms max=22.39ms count=61
D/EGL_emulation(15514): app_time_stats: avg=16.64ms min=4.30ms max=36.11ms count=58
D/EGL_emulation(15514): app_time_stats: avg=35.44ms min=6.49ms max=615.66ms count=33
D/EGL_emulation(15514): app_time_stats: avg=13.20ms min=1.13ms max=51.64ms count=56

Flutter Doctor output

Doctor output

[✓] Flutter (Channel master, 3.33.0-1.0.pre-1252, on macOS 15.6 24G84 darwin-arm64, locale fr-FR) [2,3s]
    • Flutter version 3.33.0-1.0.pre-1252 on channel master at /Users/emmanuel_lefebvre/fvm/versions/master
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision fc28781423 (3 weeks ago), 2025-08-03 10:36:42 -0400
    • Engine revision fc28781423
    • Dart version 3.10.0 (build 3.10.0-59.0.dev)
    • DevTools version 2.48.0
    • Pub download mirror https://artifact.socrate.vsct.fr/artifactory/api/pub/all-pub
    • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-native-assets

[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.1) [1 689ms]
    • Android SDK at /Users/emmanuel_lefebvre/Library/Android/sdk
    • Emulator version 35.5.10.0 (build_id 13402964) (CL:N/A)
    • Platform android-36, build-tools 35.0.1
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
      This is the JDK bundled with the latest Android Studio installation on this machine.
      To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.5+-13047016-b750.29)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 16.4) [1 405ms]
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 16F6
    • CocoaPods version 1.16.2

[✓] Chrome - develop for the web [7ms]
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Connected device (3 available) [6,8s]
    • sdk gphone64 arm64 (mobile) • emulator-5554 • android-arm64  • Android 15 (API 35) (emulator)
    • macOS (desktop)             • macos         • darwin-arm64   • macOS 15.6 24G84 darwin-arm64
    • Chrome (web)                • chrome        • web-javascript • Google Chrome 139.0.7258.139
    ! Error: Browsing on the local area network for iPhone XS. Ensure the device is unlocked and attached with a cable or associated with the same local area network as this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)

[✓] Network resources [266ms]
    • All expected network resources are available.

Thanks for the report and potential fix. Seeing the same behavior as reported on latest sdk versions.

stable : 3.35.1
master : 3.36.0-1.0.pre-253

Fix SliverMainAxisGroup scrollOffsetCorrection (#174369)

Fix SliverMainAxisGroup scrollOffsetCorrection (flutter#174369)

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SliverMainAxisGroup does not handle scrollOffsetCorrection #174368

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Expected results

Actual results

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Flutter Doctor output

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SliverMainAxisGroup does not handle scrollOffsetCorrection #174368

Description

Steps to reproduce

Expected results

Actual results

Code sample

Screenshots or Video

Logs

Flutter Doctor output

Activity

darshankawar commented on Aug 26, 2025

github-actions commented on Sep 22, 2025

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