I agree with this it is quite annoying clicking interior lights over and over again when I’m trying to set up my stores!! I actually haven’t accidentally clicked them in a while but when I first started the game I was clicking them constantly haha, I also believe that they should only be moveable in interior design mode.
Definitely see the problem. As ceiling lamps don’t have any actions (currently you can’t turn them on/off), a solution might be to simply disable left clicking for those items specifically. I expect the issues are only relevant for left clicks, not right clicks, yes?