ListView Sliding abnormal flashing #110340
Description
Steps to Reproduce
- Execute
flutter runon the code sample - Slide up from the bottom
Expected results: normal upward
Actual results: slide up from 19 and flash (bounce back) to 18
Code sample
import 'package:flutter/material.dart';
void main() {
runApp(const MyWidget());
}
class MyWidget extends StatefulWidget {
const MyWidget({super.key});
@override
State<StatefulWidget> createState() => MyWidgetState();
}
class MyWidgetState extends State<StatefulWidget> {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: ListView.builder(
itemBuilder: (context, index) {
return Container(
height: index * 30,
color: Colors.primaries[index % Colors.primaries.length],
child: Center(
child: Text(
index.toString(),
style: const TextStyle(fontSize: 40),
),
),
);
},
itemCount: 20,
),
),
);
}
}
Logs
Null
flutter doctor -v logs
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[√] Flutter (Channel master, 3.1.0-0.0.pre.2486, on Microsoft Windows [版本 10.0.22000.856], locale zh-CN)
• Flutter version 3.1.0-0.0.pre.2486 on channel master at D:\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision f477c8b184 (20 hours ago), 2022-08-25 10:28:08 -0700
• Engine revision bd7a1e0b2b
• Dart version 2.19.0 (build 2.19.0-138.0.dev)
• DevTools version 2.16.0
• Pub download mirror https://pub.flutter-io.cn
• Flutter download mirror https://storage.flutter-io.cn
[√] Android toolchain - develop for Android devices (Android SDK version 32.0.0)
• Android SDK at D:\AndroidSDK
• Platform android-33, build-tools 32.0.0
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.1.6)
• Visual Studio at D:\VSSDK\IDE
• Visual Studio Community 2022 version 17.1.32421.90
• Windows 10 SDK version 10.0.19041.0
[√] Android Studio (version 2021.2)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840)
[√] IntelliJ IDEA Ultimate Edition (version 2021.2)
• IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA 2021.2.1
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
[√] VS Code (version 1.70.2)
• VS Code at C:\Users\autop\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.46.0
[√] VS Code (version 1.71.0-insider)
• VS Code at C:\Users\autop\AppData\Local\Programs\Microsoft VS Code Insiders
• Flutter extension can be installed from:
https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[√] Connected device (5 available)
• DBY W09 (mobile) • DXQBB21C02222514 • android-arm64 • Android 10 (API 29)
• DBY W09 (mobile) • 192.168.8.208:5555 • android-arm64 • Android 10 (API 29)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [版本 10.0.22000.856]
• Chrome (web) • chrome • web-javascript • Google Chrome 104.0.5112.102
• Edge (web) • edge • web-javascript • Microsoft Edge 104.0.1293.54
[√] HTTP Host Availability
• All required HTTP hosts are available
• No issues found!
d9a562125f75718cdc0d66c9ca2e9dc3.mp4
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High-priority issues at the top of the work listIt was better in the past than it is nowUI glitches reported at the engine/skia or impeller rendering levelViewports, list views, slivers, etc.Found to occur in 3.1flutter/packages/flutter repository. See also f: labels.The issue has been confirmed reproducible and is ready to work onA fix is in flight