[WaifuApple]

The said bug also occurs if you win the battle while you are granduppered. It will offset your player icon, making you look as if you were a couple tiles above where you actually are. This does not fix between maps, but a list of temporary ways to fix it are as such:

Sit on a chair and reposition yourself. (You'll have to know where your actual character is, not the icon you see.)

Reboot or relogging.

Going into battle, your sprite is still offset, and grandupper can further offset it, so you can offset yourself more and more, and make it look like you're walking on walls.