[webview_flutter] Rendering issue on Android with Flutter 3 and setting backgroundTransparent to true. #104686
Description
Plugin version: 3.0.2
I'm running into an issue where on some Android devices the web view isn't rendering properly when the backgroundColor parameter is set to Colors.transparent. It seems to cause a blurry/faded out affect when the page changes as it doesn't fully remove the previous pages from the view.
This issue only started occurring when we upgraded to flutter v3.0.1. We were previously using v2.10.5.
Step to reproduce
- Run the following emulator: Nexus 4 API 28 - Android 9.0 Google APIs | arm64
- Then create a WebView with the intialUrl pointing to https://www.google.com/ and with backgroundColor set to Colors.transparent.
- Interact with the web view by searching then scrolling up and down and you should be able to see the issue.4.
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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 levelAffects only some versions of the relevant operating systemflutter/engine related. See also e: labels.Found to occur in 3.0Found to occur in 3.1The issue has been confirmed reproducible and is ready to work onThe WebView pluginflutter/packages repository. See also p: labels.Android applications specificallyIssue is closed as already fixed in a newer version