Closing the Application with an opened context flyout causes a crash

[jaimecbernardo]

Describe the bug

When we close an application with a context flyout opened, it logs a crash in the Event Viewer:
microsoft/PowerToys#28820
This is an issue in PowerToys utilities, which we fixed an instance of it by looping while waiting for the context flyout to closed before really closing, but it is reproable in the WinUI3 gallery as well.

Steps to reproduce the bug

1. Open the WinUI 3 Gallery application that's shipped in the Microsoft Store.
2. Enter the Text > TextBox screen.
3. Right click in the simple text box example so that the context menu appears.
4. Close the Gallery by clicking the exit button with the context menu opened. This will cause a crash.
5. Verify that there's an Event Viewer entry for the issue.

Expected behavior

That the application crashes without the issue.

Screenshots

NuGet package version

WinUI 3 - Windows App SDK 1.4.5: 1.4.240411001

Windows version

Windows 11 (22H2): Build 22621

Additional context

The crash doesn't seem to occur if "Animation Effects" are turned off in the Windows settings.

[github-actions]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one. Thank you!

Closed similar issues:

• Exception on application close if text context menu flyout opened (WinUI3 1.3, 1.4) (#8902), similarity score: 0.76
• Application crashes when trying to open any flyouts or popups (#8807), similarity score: 0.71

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[jaimecbernardo]

Maybe this is the same as #8605 ?

[codendone]

Closing as dup of #8605.