White line on top of browser

Description of the issue:

My issue is that i have white line on top of my browser. Its kinda annoying but I can get rid of it by restarting browser.
I dont think i ever had this problem or remember it.

How can this issue be reproduced?

I guess its caused by CS 2.

  1. Start CS 2.
  2. Have stretched 4:3 resolution.
  3. alt + tab on browser or on different app and than on browser.

Brave Version(v1.73.91):

Additional Information:

If it aint caused by CS 2 it may be by third party software which changes digital difference on nvidia control panel only when I alt + tab to CS 2.

CS 2

is Computer Science 2?

Its Counter-Strike 2