You can get completely stuck in the ponygirl dungeon, if you are over open shortcut, and then swap party order to a less horsified girl, making the shortcut disappear. And since you need to move to update the shortcuts, you can't get it back even if you swap back to a more horsified girl, as they still can't move before the shortcut is back, which would require moving, one example here(but probably can happen at all shortcuts): (right side of 3rd village I believe it was at)
Maybe update the shortcuts, whenever you exit menu as well?
EDIT: Wait nevermind, making a save and reloading with a sufficient horsified girl at front does fix it.
EDIT2:
Well another interesting, probably bug though for same dungeon at least (might affect other dungeons as well, haven't tested that) Is that any girls with the pony boots/Latex pony boots, when reloading a save, where originally kick/Heavy kick would be overwriting the first 2 skill slots for the character, after loading those skills are in additional bonus slots (and Kick is completely gone, if they have Heavy kick, not that that matters too much, since heavy kick is just a straigt up upgrade from Kick anyway)