Well, I was having a weird graphic issue as you can see in messages #30, #50, #51 and #52 at the 13-01 Stable Update thread. Asked @philm and he gave me the clue to the solution (look message #55).
Restoring last snapshot made before the 13-01 update and updating all but Mesa 23.3.3 worked for me. The issue was solved and had no stability issues since then. Another workaround was disabling browser hardware acceleration (with performance loss).
I’m not the only one with these issues:
Another problem detected is VideoLAN VLC, with Mesa 23.3.3 installed doesn’t play AVI files (black screen) and had to change hardware acceleration mode.