Start Menu occasionally flickers on opening (a blank frame is shown before fading in) #2573

Describe the bug

See the gif animation above, I have to slow down the capture to show the problem. I can't see the blank frame with my eyes but the flickering is very obvious.

Area of issue

Start menu

To reproduce

Just open start menu repeatedly with default settings (fade animation).

Expected behavior

No response

Open-Shell version

4.4.202

Windows version

Windows 10 21H2 (LTSC 2021)

Additional context

This is more easy to observe on higher refresh rate, but it can still happen on 60 Hz.