Hmm that's really weird, it just wouldn't walk itself back under there for me no matter how long I waited. I ran it again and was able to reproduce the issue, but I didn't change any settings from the default with the exception of the stall, tile ID, and what to bank. Speaking of which, I also noticed in the GUI it states F1 to set the custom tile, but F1 doesn't work and it's actually F2?