CommunityToolkit
[BUG] ShowPopupAsync can hang with only the overlay visible when clicking over a SkiaSharp SKGLView
Is there an existing issue for this?
- [x] I have searched the existing issues
Did you read the "Reporting a bug" section on Contributing file?
- [x] I have read the "Reporting a bug" section on Contributing file: https://github.com/CommunityToolkit/Maui/blob/main/CONTRIBUTING.md#reporting-a-bug
Current Behavior
If the user is clicking in a window that contains a SkiaSharp SKGLView with a render loop while the ShowPopupAsync popup is coming up, its can intermittently hang the application. The overlay is visible, but the content is not and the app is non-responsive.
Expected Behavior
Calling ShowPopupAsync should show the specified popup and not hang the application even when a Skia Sharp SKGLView with a render loop exists on the page
Steps To Reproduce
Run this sample application provided on a Windows machine and press the [click me] button on the first page and then keep clicking repeatedly until the popup either displays (its on a short 500ms delay linked to on appearing), or a white overlay appears (without the popup content) and hangs the app. The app attempts to display 4 popups, each 500ms apart. Its usually quite simple to reproduce by just continuously clicking in the same place the [Click me] button was on the first page. If it fails to reproduce, close the second window and try again.
Link to public reproduction project repository
https://github.com/cjorgens79/MauiMCTPopupIssue/tree/master
Environment
- .NET MAUI CommunityToolkit: 12.2.0
- OS: Windows 11
- .NET MAUI: 9.0.120
- SkiaSharp: 3.119.1
Anything else?
This issue appears to be related to having an SKGLView on the page with RenderLoop=true, perhaps as something is drawing in the background while clicking and the popup trying to display over the top it causes the issue? Also of note is that setting "CanBeDismissedByTappingOutsideOfPopup = false" also stops it crashing, presumably because its no longer trying to act on those clicks that are occurring while the popup is opening.
