Just updated to android 12 with OneUi 4 and encountered several bugs/glitches. The main one is screen glitches while using fingerprint to unlock the phone. Restarted the phone several times but still no luck to fix. Maybe have to wait for a fix on next update.
Moreover, there isn't even the slightest improvement seen in terms of performance. Pure android 12 experience is great but samsung Ui is just a piece of t0ilet tr@**bleep**...
As soon you tap on screen while phone is locked and AOD i.e. clock or fingerprint scanner comes up it flashes, or you place your finger on the scanner just before the scanner sign appears. It doesn't seem to have something wrong with fingerprint scanner but Alway on feature. Because if you directly turn the screen on with the power button it works fine.