MediaPlayerElement's IsFullScreen doesn't work?! #10418
Description
Describe the bug
MediaPlayerElement's IsFullScreen Property works well on UWP but on WinUI3?
How to solve this full screen problem？
By the way, is there any plan to increase the launch speed of WinUI3 program to reach the speed of UWP？
Steps to reproduce the bug
l<MediaPlayerElement IsFullWindow="bool" />
Expected behavior
No response
Screenshots
No response
NuGet package version
Windows App SDK 1.2.2: 1.2.221209.1
Packaging type
Packaged (MSIX)
Windows version
Windows 11 version 22H2 (22621, 2022 Update)
IDE
Visual Studio 2022
Additional context
No response