Get System.ArgumentException error when exiting net 8 or 9 mobile windows app that used border.shadow

[davefxy]

Description

When I use <Border.Shadow> on a .Net Maui Net8 or later mobile app running on Windows 11, upon exiting the app I see numerous instances of :
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.

Steps to Reproduce

On Windows compile and runthe "Windows Machine" debug version of the https://github.com/CommunityToolkit/Maui/tree/main/samples/CommunityToolkit.Maui.Sample.
Select Views, then select Avatar Views Shadows
Exit the app and view the Output window.
You will see at the bottom, multiple instances of 👍
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.

Link to public reproduction project repository

https://github.com/CommunityToolkit/Maui/tree/main/samples/CommunityToolkit.Maui.Sample.

Version with bug

9.0.0-rc.1.24453.9

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

Windows 11

Did you find any workaround?

No

Relevant log output

OnAppearing: Views
'CommunityToolkit.Maui.Sample.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.8\System.Runtime.Intrinsics.dll'. 
OnDisappearing: Views
OnAppearing: AvatarView Shadows
OnDisappearing: AvatarView Shadows
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.
Exception thrown: 'System.ArgumentException' in System.Private.CoreLib.dll
WinRT information: The caller is not allowed to perform this operation on this object.
The program '[35900] CommunityToolkit.Maui.Sample.exe' has exited with code 0 (0x0).

[jfversluis]

Can you reproduce this without the Community Toolkit? Why do you think this is something in .NET MAUI and not in the .NET MAUI Community Toolkit?

[davefxy]

Yes I reproduced it with a simple mod to the default new app created with vs 2022 Preview
ShadowTest.zip

[jfversluis]

You mention this starting to happen as of .NET 8, are you able to retrace what version is the latest version where this didn't happen?

[davefxy]

I started noticing this issue when working on a new Net 8 app. I didn't notice this issue until Net 8. I started making more of an effort to use Borders instead of Frames during the move to Net 8.

[ninachen03]

This issue has been verified using Visual Studio 17.12.0 Preview 3.0(9.0.0-rc.1.24453.9 & 8.0.92 & 8.0.3). Can repro it. but works fine on17.11.5 (7.0.101).
Note : We should disable the 'Just My Code' Option in Debug setting to repro this issue.