mouse_tracking.dart failed assertion

Steps to Reproduce

I do not have a compact reproducer. The code that seems to trigger the problem looks like:

class LMPredPage extends ScaffoldWidget {
  const LMPredPage({Key key}) : super('LM Preds', key: key);

  @override
  Widget body(BuildContext context) {
    return ListView(
      children: [
        SingleChildScrollView(
          scrollDirection: Axis.horizontal,
          child: ...,
        )
      ]
    );
  }
}

The problem is observed when doing a hot reload in debug mode on Android Studio with a macOS target.

Expected results:

No assertions.

Actual results:

Logs

════════ Exception caught by gesture library ═══════════════════════════════════════════════════════
The following assertion was thrown while routing a pointer event:
'package:flutter/src/rendering/mouse_tracking.dart': Failed assertion: line 392 pos 12: '!_debugDuringDeviceUpdate': is not true.

Either the assertion indicates an error in the framework itself, or we should provide substantially more information in this error message to help you determine and fix the underlying cause.
In either case, please report this assertion by filing a bug on GitHub:
https://github.com/flutter/flutter/issues/new?template=BUG.md

When the exception was thrown, this was the stack:
#2 BaseMouseTracker._deviceUpdatePhase (package:flutter/src/rendering/mouse_tracking.dart:392:12)
#3 BaseMouseTracker._handleEvent. (package:flutter/src/rendering/mouse_tracking.dart:477:7)
#4 BaseMouseTracker._monitorMouseConnection (package:flutter/src/rendering/mouse_tracking.dart:381:9)
#5 BaseMouseTracker._handleEvent (package:flutter/src/rendering/mouse_tracking.dart:476:5)
#6 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:77:12)

flutter doctor -v
[✓] Flutter (Channel dev, 1.21.0-9.0.pre, on Mac OS X 10.15.4 19E287, locale en-US)
• Flutter version 1.21.0-9.0.pre at /Users/chip/dev/flutter
• Framework revision 7c6f9dd (10 days ago), 2020-08-09 10:31:03 -0400
• Engine revision 6d86e67
• Dart version 2.10.0 (build 2.10.0-4.0.dev 0341576448)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
• Android SDK at /Users/chip/Library/Android/sdk/
• Platform android-29, build-tools 29.0.3
• ANDROID_HOME = /Applications/android-sdks/
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 11.6)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 11.6, Build version 11E708
• CocoaPods version 1.9.1

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

[✓] Android Studio (version 3.6)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 45.1.1
• Dart plugin version 192.8052
• Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b4-5784211)

[!] VS Code (version 1.45.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
✗ Flutter extension not installed; install from
https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected device (3 available)
• macOS (desktop) • macos • darwin-x64 • Mac OS X 10.15.4 19E287
• Web Server (web) • web-server • web-javascript • Flutter Tools
• Chrome (web) • chrome • web-javascript • Google Chrome 84.0.4147.125

! Doctor found issues in 1 category.

@chipkent

Hi @chipkent
Does the code bellow reproduce the issue for you?

sample code

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      home: Scaffold(
        appBar: AppBar(
          title: Text('Label unnecessarily elided'),
        ),
        body: ListView(
            children: [
              SingleChildScrollView(
                scrollDirection: Axis.horizontal,
              )
            ]
        ),
      ),
    );
  }
}

Sorry for the delay. This did not reproduce the problem.

@chipkent

Hi @chipkent
I cannot reproduce this issue on latest dev channel.
Can you upgrade to master and try again
flutter channel master
flutter upgrade --force
flutter doctor -v

Without additional information, we are unfortunately not sure how to resolve this issue.
We are therefore reluctantly going to close this bug for now.
Please don't hesitate to comment on the bug if you have any more information for us; we will reopen it right away!
Thanks for your contribution.

We are phasing the same issue in a web project using the latest stable channel. We did start to get these errors after last stable release.

Unfortunately at this moment we do not have a minimal project to share.

════════ Exception caught by scheduler library ═════════════════════════════════════════════════════ Assertion failed: file:///Users/gunnar/dev/flutter/packages/flutter/lib/src/rendering/mouse_tracking.dart:301:12 !_debugDuringDeviceUpdate is not true

I guess using master is not an option for a web project :-(

`
gunnar@iMac aemee-flutter-poc % flutter devices
2 connected devices:

Web Server (web) • web-server • web-javascript • Flutter Tools
Chrome (web) • chrome • web-javascript • Google Chrome 86.0.4240.111
gunnar@iMac aemee-flutter-poc % flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel beta, 1.23.0-18.1.pre, on Mac OS X 10.15.7 19H2 x86_64, locale sv-SE)
[!] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
✗ Android license status unknown.
Run flutter doctor --android-licenses to accept the SDK licenses.
See https://flutter.dev/docs/get-started/install/macos#android-setup for more details.
[✓] Xcode - develop for iOS and macOS (Xcode 12.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 4.1)
[✓] IntelliJ IDEA Ultimate Edition (version 2020.2.3)
[✓] Connected device (2 available)

! Doctor found issues in 1 category.

`

Could everyone who still has this problem please file a new issue with the exact description of what happens, logs, and the output of flutter doctor -v.
All system setups can be slightly different, so it's always better to open new issues and reference related issues.

This is what our developer who has now coded around this bug stated:

In the latets flutter version, inkwell can not be dragged with an effect (onTap, onHover, onLongPressed)

Same error with InkWell -- weird it doesn't care about directionality until a random drag time. I Tried to wrap my App with Directionality but it doesn't work.

errors.dart:167 Uncaught Error: No Directionality widget found.
_InkResponseStateWidget widgets require a Directionality widget ancestor.
The specific widget that could not find a Directionality ancestor was:
_InkResponseStateWidget
The ownership chain for the affected widget is: "_InkResponseStateWidget ← InkWell ← Semantics ← DefaultTextStyle ← AnimatedDefaultTextStyle ← _InkFeatures-[GlobalKey#bc79c ink renderer] ← NotificationListener ← CustomPaint ← ShapeBorderPaint ← PhysicalShape ← ⋯"
Typically, the Directionality widget is introduced by the MaterialApp or WidgetsApp widget at the top of your application widget tree. It determines the ambient reading direction and is used, for example, to determine how to lay out text, how to interpret "start" and "end" values, and to resolve EdgeInsetsDirectional, AlignmentDirectional, and other *Directional objects.
at Object.throw [as throw] (errors.dart:216)
at debug.dart:271
at Object.debugCheckHasDirectionality (debug.dart:290)
at Function.of (basic.dart:117)
at ink_well._InkResponseState.new.updateHighlight (ink_well.dart:850)
at ink_well._InkResponseState.new.[_handleHoverChange] (ink_well.dart:1059)
at ink_well._InkResponseState.new.[_handleMouseEnter] (ink_well.dart:1047)
at Function._handleDeviceUpdateMouseEvents (mouse_tracking.dart:502)
at mouse_tracking.MouseTracker.new.handleDeviceUpdate (mouse_tracking.dart:510)
at mouse_tracking.dart:428
at mouse_tracking.MouseTracker.new.[_deviceUpdatePhase] (mouse_tracking.dart:306)
at mouse_tracking.dart:408
at mouse_tracking.MouseTracker.new.[_monitorMouseConnection] (mouse_tracking.dart:290)
at mouse_tracking.MouseTracker.new.updateWithEvent (mouse_tracking.dart:407)
at binding$5.WidgetsFlutterBinding.new.dispatchEvent (binding.dart:276)
at binding$5.WidgetsFlutterBinding.new.[_handlePointerEventImmediately] (binding.dart:316)
at binding$5.WidgetsFlutterBinding.new.handlePointerEvent (binding.dart:280)
at binding$5.WidgetsFlutterBinding.new.[_flushPointerEventQueue] (binding.dart:238)
at binding$5.WidgetsFlutterBinding.new.[_handlePointerDataPacket] (binding.dart:221)
at Object.invoke1 (platform_dispatcher.dart:907)
at _engine.EnginePlatformDispatcher..invokeOnPointerDataPacket (platform_dispatcher.dart:170)
at _engine.PointerBinding..[onPointerData] (pointer_binding.dart:128)
at pointer_binding.dart:513
at pointer_binding.dart:485
at pointer_binding.dart:208
DartError @ errors.dart:167
throw @ errors.dart:216
(anonymous) @ debug.dart:271
debugCheckHasDirectionality @ debug.dart:290
of @ basic.dart:117
updateHighlight @ ink_well.dart:850
[_handleHoverChange] @ ink_well.dart:1059
[_handleMouseEnter] @ ink_well.dart:1047
_handleDeviceUpdateMouseEvents @ mouse_tracking.dart:502
handleDeviceUpdate @ mouse_tracking.dart:510
(anonymous) @ mouse_tracking.dart:428
[_deviceUpdatePhase] @ mouse_tracking.dart:306
(anonymous) @ mouse_tracking.dart:408
[_monitorMouseConnection] @ mouse_tracking.dart:290
updateWithEvent @ mouse_tracking.dart:407
dispatchEvent @ binding.dart:276
[_handlePointerEventImmediately] @ binding.dart:316
handlePointerEvent @ binding.dart:280
[_flushPointerEventQueue] @ binding.dart:238
[_handlePointerDataPacket] @ binding.dart:221
invoke1 @ platform_dispatcher.dart:907
invokeOnPointerDataPacket @ platform_dispatcher.dart:170
[_onPointerData] @ pointer_binding.dart:128
(anonymous) @ pointer_binding.dart:513
(anonymous) @ pointer_binding.dart:485
(anonymous) @ pointer_binding.dart:208
32errors.dart:167 Uncaught Error: Assertion failed: file:///D:/git/flutter/packages/flutter/lib/src/rendering/mouse_tracking.dart:301:12
!debugDuringDeviceUpdate
is not true
at Object.throw [as throw] (errors.dart:216)
at Object.assertFailed (errors.dart:24)
at mouse_tracking.MouseTracker.new.[_deviceUpdatePhase] (mouse_tracking.dart:301)
at mouse_tracking.dart:408
at mouse_tracking.MouseTracker.new.[_monitorMouseConnection] (mouse_tracking.dart:290)
at mouse_tracking.MouseTracker.new.updateWithEvent (mouse_tracking.dart:407)
at binding$5.WidgetsFlutterBinding.new.dispatchEvent (binding.dart:276)
at binding$5.WidgetsFlutterBinding.new.[_handlePointerEventImmediately] (binding.dart:316)
at binding$5.WidgetsFlutterBinding.new.handlePointerEvent (binding.dart:280)
at binding$5.WidgetsFlutterBinding.new.[_flushPointerEventQueue] (binding.dart:238)
at binding$5.WidgetsFlutterBinding.new.[_handlePointerDataPacket] (binding.dart:221)
at Object.invoke1 (platform_dispatcher.dart:907)
at _engine.EnginePlatformDispatcher..invokeOnPointerDataPacket (platform_dispatcher.dart:170)
at _engine.PointerBinding..[_onPointerData] (pointer_binding.dart:128)
at pointer_binding.dart:513
at pointer_binding.dart:485
at pointer_binding.dart:208

Could everyone who still has this problem please file a new issue with the exact description of what happens, logs, and the output of flutter doctor -v.
All system setups can be slightly different, so it's always better to open new issues and reference related issues.

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.

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mouse_tracking.dart failed assertion #64129

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mouse_tracking.dart failed assertion #64129

Description

Steps to Reproduce

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pedromassangocode commented on Aug 19, 2020

chipkent commented on Aug 31, 2020

pedromassangocode commented on Aug 31, 2020

TahaTesser commented on Oct 14, 2020

oakstair commented on Oct 31, 2020

oakstair commented on Oct 31, 2020

TahaTesser commented on Nov 2, 2020

oakstair commented on Nov 2, 2020

SethKitchen commented on Dec 8, 2020

TahaTesser commented on Dec 9, 2020

github-actions commented on Aug 9, 2021

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