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Back swiping then dropping the gesture back where it started breaks #31471

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@xster

Seems like #30422 broke this again

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  1. added
    c: regressionIt was better in the past than it is now
    frameworkflutter/packages/flutter repository. See also f: labels.
    p: cupertino_uicupertino_ui package in flutter/packages
    f: routesNavigator, Router, and related APIs.
    on Apr 23, 2019
  2. 1AlexFix1 commented on Apr 23, 2019

    @1AlexFix1

    Hello!
    I climbed into the source and found the following, I hope he will help you. As it was written here
    #29596 (comment), this happens after a certain number of uses, but this is not what you see in the GIF, this is because if you finish scrolling on your own, the screen cannot be rejected by scrolling. I already had this error earlier and your team has already solved it #27774 , #27333
    Без названия

    logged in _CupertinoBackGestureDetectorState HorizontalDragGestureRecognizer

    [✓] Flutter (Channel master, v1.5.5-pre.22, on Mac OS X 10.14.4 18E226, locale ru-RU)
    [✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    [✓] iOS toolchain - develop for iOS devices (Xcode 10.2.1)
    [✓] Android Studio (version 3.4)
    [✓] Connected device (1 available)

  3. ninnepinne commented on Apr 25, 2019

    @ninnepinne

    Hello!
    Came here because I hit: #29596
    Switched to master and it works.

    About to release my app and a bit worried by this one.

    Do you have any more information about the issue?

    I can't reproduce it on a physical iPhone 6S.
    UPDATE: start drag, don't let go, then drag all the way back. Voila! A world of pain.
    but...
    I can reproduce it on a iPhone X emulator.

    ~~@1AlexFix1 Any tip for reproducing it on a physical device?~~~
    Update: see above

    @xster Any time frame for a fix?

    Thanks!

  4. 1AlexFix1 commented on Apr 25, 2019

    @1AlexFix1

    Hello!
    Came here because I hit: #29596
    Switched to master and it works.

    About to release my app and a bit worried by this one.

    Do you have any more information about the issue?

    I can't reproduce it on a physical iPhone 6S.
    but...
    I can reproduce it on a iPhone X emulator.

    @1AlexFix1 Any tip for reproducing it on a physical device?

    @xster Any time frame for a fix?

    Thanks!

    i was test on simulator XS, no real device

  5. ninnepinne commented on Apr 25, 2019

    @ninnepinne

    @1AlexFix1 Ahhh, sorry, false alarm/hopes...

    I now understand the technique.
    Start a drag and then fully drag back to original position.

    Now getting the error on the physical device too... (bad words here):-(

    @1AlexFix1 Thank you!

    Have to go with a workaround then...

  6. xster commented on Apr 25, 2019

    @xster
    MemberAuthor

    Embarrassingly the fix is one line. I'm adding more tests at the moment.

  7. msw333 commented on Apr 29, 2019

    @msw333

    Thanks for the fast solution. Again, any clue when it’s in master 😉?

  8. xster commented on Apr 30, 2019

    @xster
    MemberAuthor

    Unfortunately the PR was reverted because it made a test flaky. Will try again.

  9. reopened this on Apr 30, 2019
  10. github-actions commented on Aug 30, 2021

    @github-actions

    This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

  11. locked as resolved and limited conversation to collaborators on Aug 30, 2021
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    c: regressionIt was better in the past than it is nowf: routesNavigator, Router, and related APIs.frameworkflutter/packages/flutter repository. See also f: labels.p: cupertino_uicupertino_ui package in flutter/packageswaiting for PR to land (fixed)A fix is in flight

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