Debian buster > xfce desktop version 4.12
Brave Version 1.31.88 Chromium: 95.0.4638.69 (Official Build) (64-bit)
The issue is that when the window is maximised it goes out of bands of the screen. Tried different screen resolutions nothing helps.
This was discussed a bunch here a couple weeks ago, it’s a ‘Chromium 95 on Xfce’ issue. If you search for Xfce you’ll probably find the other threads.
In short though, if you update Brave to latest (which right now is 1.32.106, although I think another release will come out any day now) I believe your problem will go away.