I'm not sure where Freddy moves between being in the bathroom looking up into the right camera hall, but between that move and his move to the corner, the right hall camera button will occasionally stop changing the camera to the right hall and just leave the camera on the last clicked camera. (Ex: if I clicked on the left hall and tried to go to the right hall, I would stay looking at the right hall.) I was on night 4 when I first noticed it. Mostly happened when I was going to look at Chica during that point and would fix itself once Freddy was in the corner.