Custom control inherits MediaPlayerElement and crashes when running

[BigHeadDev]

Describe the bug

I plan to create my custom player control that inherits MediaPlayerElement. I haven't written any code, but when I use it in xaml, it directly causes the program to crash

winui3 unpackage mode

Steps to reproduce the bug

1，create a new class named "MediaPlayerElementEx"
2，inherited MediaPlayerElement
3，use it on HomePage.xaml directly <controls:MediaPlayerElementEx />
4，run app

Expected behavior

app crashed

Screenshots

NuGet package version

WinUI 3 - Windows App SDK 1.4.4: 1.4.231219000

Windows version

Windows 11 (22H2): Build 22621

Additional context

No response

[codendone]

Same as #8973.

[BigHeadDev]

Same as #8973.

So, isn't this bug fixed in future plans?