Annnnddd fixed it. Thank you, I wouldn't have noticed. I tested it with a friend and neither of us noticed this issue.

I see what you're going for in here but leaving the exit door open is a big risk. At the moment, the player can just use the funnel to cross the path of exit door, hop out of the funnel and leave, skipping everything else in chamber except for the first room.

I've got a little collection of chambers going and I'm always interested in feedback. I'd be grateful if you'd have a look:
Elementary