Sometimes I can't leave the bed, neither by waiting, nor by pressing Esc or clicking "Leave bed", just by closing the game windows and opening Minecraft again. The camera position is from where the character usually lands after leaving the bed, but at the floor (as if the hitbox had height 0) and looking at angles -180, 0. I can't really give additional information yet, because it seems to happen randomly. Lag doesn't seem to be the cause, neither the coordinates of the bed.