Fixed the trade bug as well as added a button to stop trading(which I wanted to add from the beginning but never prioritized it)
I investigated the monkey glitch. I know the graphics rendering logic is super wonky and sometimes in rare occurrences it will draw the player twice. I wasn't able to reproduce the specific issue you had but rest assured it is a purely visual glitch and there is only ever a single player in the game code despite what the visuals show. I wish I could track it down and squash it but not sure where it's occurring at this moment. I did fix an error in logic of the monkey following you after punching you out of the room. That no longer happens.