Dan what is the model of camera you are using? I was chatting a few months back with another user who wanted to find out where the light sensor is on the Dome camera. I don’t believe he got the answer with YI and didn’t fancy a tear down on his camera. It may be trial and error with some electrical tape around the ring of the camera to find where the light sensor is.
That way you could trick it into thinking it was low light conditions.
I assume you are using an SD for recording and have selected Activity Detection Recording within the Settings menu?
It is a strange one - I don’t know if the camera thinks it’s IR lights are motion - reflecting back from the wall.
Another question - is your AC power levels consistent I.e no fluctuations. Looking at your door you look to be in the UK so I’m thinking you won’t have mains power fluctuations. Usually power fluctuations impact IR lights on battery operated devices.
It’s a strange issue you have given you have moved the camera which was behaving normally to this location to test.
I know it’s strange but could you simulate night time conditions and put it in a box for dark conditions ? A mess around I know but would be great to get this adequately sorted for you as the cameras are absolutely great and at a smashing price.