Trying to find

Trying to find out why does the indoor 2k camera keeps turning around randomly. I have set default angle and no motion tracking. Maybe cause by my robot cleaner but why does the garage camera randomly turns around facing backwards. I have 4 of them every single one has this problem. Sometimes happens to one of the camera during the night other time randomly different camera during the day and just now I turned the camera back to the correct angle then the camera stops working for a second when I go back to live view it self back around with in a minute.