You are absolutely right, this did start originally as a circuit puzzle with cables, but we refactored into a dungeon to try and fit a different theme, and it appears there were some issues in the refactor / sprite switch for this.
Yes, the bottom right End Room is supposed to be facing to the left for the solution. And there is a specific sprite that seems to be a trip up for most players now that it no longer makes logical sense as a wire circuit.
As for the puzzle, it does close but only on completion. Another sacrifice we had to make to solve another little issue because we ran out of time. Not the best implementation on my part, haha.
I appreciate all your feedback and detail though, this was a huge learning experience, and we will get these issues addressed for further playthroughs as soon as we can :)
Thank you for playing our game!