MediaSource.OpenAsync fails with 'A delegate was assigned when not allowed' when called simultaneously on different threads

[benstevens48]

Describe the bug

MediaSource.OpenAsync fails with 'A delegate was assigned when not allowed' when called simultaneously on different threads. Looks like the MediaSource internally has this sort of error - https://devblogs.microsoft.com/oldnewthing/20210226-00/?p=104911#:~:text=The%20description%20of%20this%20error,callback%20has%20already%20been%20set.

Steps to reproduce the bug

Partial code

MediaSource newMediaSource = null;
try {
    newMediaSource = MediaSource.CreateFromStorageFile(file);
}catch (Exception) { }
if(newMediaSource == null) {
    return;
}
var t1 = newMediaSource.OpenAsync();
var t2 = Task.Run(async () => {
    await newMediaSource.OpenAsync();
});
await Task.WhenAll(t1.AsTask(), t2);

Expected behavior

No exception.

Screenshots

No response

NuGet package version

None

Packaging type

Packaged (MSIX)

Windows version

Windows 11 version 22H2 (22621, 2022 Update)

IDE

Visual Studio 2022

Additional context

Bug is in Windows.Media.Core.MediaSource. WinAppSDK is not required.