Android 11 in Rog 2 is full of bugs.Some which I observed -Not able to decline incoming call in one go.i have to swipe 3 times to decline - Not able to open Google assistant using voice commands.retrained model multiple times. - one thing which is irking me a lot- not able to open app drawer by swiping up on home screen.
Thats H/W info, Get a screenshot of S/W info. BTW if u didnt perform factory reset after upgrade then make sure u do that first and get a backup of ur personal data before resetting ur device.