Procedure: Have only a block and a half space open above bed, then sleep in the bed and you can notice that the camera moves up into blocks
Expected result: the camera not moving upwards into blocks
Observed result: the camera moves up more than it used to in 1.20.1
(Note: not sure if this is supposed to happened but I doubt it) (also prob for 1.20.11 but i can't check)
Video Proof: https://youtu.be/bfY1qvi6Xwk
check 1.20.11 hotfix