Screen flashes after volume up and down osd

Hi guys
In some Apps Like vlc and vscode screen flashes
what’s the problem?
I have Nvidia driver installed from rpmfusion and Xorg Enabled

Since when? From beginning on or just after an update?
Please uname -a us.

I keep it short as you :wink:

From Beginning
Fresh install did not help

uname -a
Linux rahmani 5.10.23-200.fc33.x86_64 #1 SMP Thu Mar 11 22:18:30 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

anybody has no solution?