Severe performance regression on Firefox in v. 3.19 #145563
Description
Steps to reproduce
Use a website built with Flutter 3.19.0 or later in Firefox.
Code sample
Code sample
$ flutter create --sample=widgets.ListView.7 .
$ flutter build web --no-pub --no-native-null-assertions --pwa-strategy none --no-web-resources-cdnI've built ListView.7 sample on versions 3.16.9, 3.19.0, and 3.19.4 using the html and canvaskit renderers:
https://zliide.github.io/flutter_web_perf/3.16.9-canvaskit/
https://zliide.github.io/flutter_web_perf/3.16.9-html/
https://zliide.github.io/flutter_web_perf/3.19.0-9.0.pre-canvaskit/
https://zliide.github.io/flutter_web_perf/3.19.0-9.0.pre-html/
https://zliide.github.io/flutter_web_perf/3.19.0-canvaskit/
https://zliide.github.io/flutter_web_perf/3.19.0-html/
https://zliide.github.io/flutter_web_perf/3.19.4-canvaskit/
https://zliide.github.io/flutter_web_perf/3.19.4-html/
Try opening them in Firefox, scroll up and down a bit, and see if you can spot a pattern.
Performance profiling on master channel
- The issue still persists on the master channel
Timeline Traces
Timeline Traces JSON
N/A; flutter run doesn't work with Firefox.
Video demonstration
Video demonstration
[Upload media here]
What target platforms are you seeing this bug on?
Web
OS/Browser name and version | Device information
Firefox v123
Does the problem occur on emulator/simulator as well as on physical devices?
Unknown
Is the problem only reproducible with Impeller?
N/A
Logs
Logs
[Paste your logs here]Flutter Doctor output
Doctor output
$ flutter doctor -v
[✓] Flutter (Channel stable, 3.19.3, on Microsoft Windows [Version 10.0.22631.3296], locale ...)
• Flutter version 3.19.3 on channel stable at C:\Users\...
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision ba39319843 (2 weeks ago), 2024-03-07 15:22:21 -0600
• Engine revision 2e4ba9c6fb
• Dart version 3.3.1
• DevTools version 2.31.1
[✓] Windows Version (Installed version of Windows is version 10 or higher)
[!] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
• Android SDK at C:\Users\...\AppData\Local\Android\sdk
✗ cmdline-tools component is missing
Run `path/to/sdkmanager --install "cmdline-tools;latest"`
See https://developer.android.com/studio/command-line for more details.
✗ Android license status unknown.
Run `flutter doctor --android-licenses` to accept the SDK licenses.
See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[✗] Chrome - develop for the web (Cannot find Chrome executable at .\Google\Chrome\Application\chrome.exe)
! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.
[✓] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.4.5)
• Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community
• Visual Studio Community 2022 version 17.4.33403.182
• Windows 10 SDK version 10.0.22000.0
[✓] Android Studio (version 2023.2)
• 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 17.0.9+0--11185874)
[✓] VS Code (version 1.87.2)
• VS Code
• Flutter extension version 3.84.0
[✓] Network resources
• All expected network resources are available.
! Doctor found issues in 2 categories.