On Chapter 40, Page 25, we're shown a gate from the outside, flush with the doorjam, barrel hinges on the left, lock on the right. We get a few panels of the gate being unlocked, and then the gate creakily opens inward, allowing our intrepid hero and the enigmatic Thin man to walk in.
Except, that's not possible. Well, sort of. Not possible in a physical space that follows the normal physical rules as we understand them, which so far, this space seems to. Non-euclidian hinges aside, if the barrel hinges are on the side of the door facing Maytag and Thin man, the Outside, then the door should open outwards, not inwards, because the door pivots around those barrel hinges - to open inward, it would have to pass through the doorjam, and the hinges would have to pass through themselves.