In this case shown below, attempting to disable the trap (which I did successfully do the second time I tried, thus no trap. It's where the cursor was), results in an arrow flying towards the player, then the moment the arrow reaches the player it instead hits the sconce. I tried to get a picture but it was a bit too early and looked rather odd. I think this may be related to the issues with throwing: http://community.gaslampgames.com/threads/thrown-weapon-targeting-is-really-bugged.1869/