White flickering when resizing FluentWindow

[4Ripz]

The FluentWindow has some white flickering when you resize the window issue only with FluentWindow the normal UI Window works fine. On Windows 10 you can see the bug all the time when resizing but on Windows 11 to see the bug you need to remove WindowBackdropType otherwise, you can't see the bug on Windows 11. someone in #482 had this problem and managed to fix it but i found an issue when using that fix the issue is when setting the WindowChrome GlassFrameThickness to 0 the flickering goes away but the focus doesn't work and it makes the backdrop stuck. For example in Windows 11 when starting the app and WindowBackdropType="Mica" and you are focused on the app the backdrop will be stuck on Mica effect even if you switch the focus to another app also in Windows 10 same but with the shadow effect.