The issue is that after F31 BIOS revision all newer BIOS updates changed the resolution of BIOS menu on my AB350M GAMING-3. I also updated the firmware as they have guided on their site. Still I get the issue.
I had this issue on an older A8 powered system that I was using, after a BIOS update, and on a TV with 720 resolution. It would start up with BIOS page HUGE and unusable without moving it to a higher resolution screen.