Hello, I would like to hop on this thread and also mention that I just played the Windows version today and encountered this bug twice, the first time I thought it was because I was too close to the right of the screen when the exit showed up, so I waited at the left of the screen until the scroll pushed Moon Child to the exit, and both times the game just sits at the exit with no response from any button except Start, which makes you restart the level.
EDIT: My version of the game was from April 22nd, I redownloaded today and made it through just fine.