I have just updated my M31s to One UI 3.1 and android 11. I have two M31s, in both I bave found out some of the really bad crashing issues.
1. Lock screen UI is crashing often. The lock icon below the camera is changing it's position weirdly.
Just look at the image below. It moves to the left side of screen.
2. Playing twitter videos in chrome or google crashing the entire display badly. Pixels started flickering and touch gets hangs. Colors are the video floating beyond the video dimension area. This problem does not occur often but 2/10 it does.
3. I am able to notice pixel changing its colors while navigating from home screen to apps screen. I have attached video below. You can see at right bottom of the video, pixel changing its colors are clearly visible. Although it is not noticeable at first. But when you are using the phone in high brightness, you will definitely notice this. Paying such a high amount and still having such display problems is not acceptable.
