In Karamelle: Gutenstadt, there are storm Watchamagolems. Sometimes, they stay in the square like they're supposed to, but sometimes they keep trotting straight out of the square, onto the sidewalk, and even into the building the gnomes used for their meetings, before turning around to go back to the square.
I can't figure out what causes this to happen, but in this session, it has now happened while I'm in a fight (the golems don't disappear, they just walk straight through the battle ring and keep going) and while I'm not in a fight (standing on the sidewalk). Thankfully, they're not adding to the battle ring, or pulling me in while I'm safe on a sidewalk. But it's still a weird bug!