Top of the window NOT visible (white/black bar)

Out of the blue, the top few pixels - below the address bar, about 1/9th of the whole window -is full white (or black). Reset, restart did not fix.
Any other windows and apps open on my Windows does not reproduce this error, only with Brave.
The top blank area is not clickable.

No idea how to reproduce since nothing triggered it for me, it was from one second to the other.

I won’t be able to continue using this browser like this if not fixed somehow.
Screenshot:

Can’t select About brave to provide version info, since can’t see the top of the window.