ArgumentOutOfRangeException on DisplayArea.FindAll() with AOT

[Marv51]

Describe the bug
When I enable PublishAOT I am getting an ArgumentOutOfRangeException that originates from this line:
var a = DisplayArea.FindAll();.

To Reproduce
Just add the provided line to an empty WinUI 3 project, enable Native AOT and execute the line.

Expected behavior
It should return a collection of DisplayArea objects. This works without PublishAOT. In the past there were issues with this API (#747) but this is not the same issue.

Version Info
Latest (2.1.5, with WinAppSDK 1.6.1, WinSDK 10.0.22621.47)

Additional context
ParseGenericTypeName in TypeNameSupport.cs is being called with this partialTypeName: CFlat.WinRT.ReadOnlyListToVectorViewAdapter`2[Windowing.DisplayArea,class Microsoft::UI::Windowing::DisplayArea*]
Which has a ` but no <, which leads to an exception in the string parsing in the method.

[dongle-the-gadget]

I think the bug itself is in Windows App SDK, since you're supposed to use < and > in parameterized types (see the samples from cppwinrt), but I guess this can be worked around.

[Marv51]

Would it be the best option for me to open a new issue on microsoft/microsoft-ui-xaml then? Or could this issue be transferred there? Is this already being tracked internally?

[manodasanW]

I had tracked down where this type name is coming from, I will open an internal issue on the appropriate team.

[Marv51]

@manodasanW Thank you!

[Marv51]

I guess the "appropriate team" fixed something, as it is working for me now.

(WinAppSDK 1.6.5, CsWinRT 2.2, .NET 9.0.2)