I have noticed this too, I can take my PC and stick it in the corner, then have any of my creatures go into a shop, take all the stuff lying on the floor, and every single time it says "You stole the item without anyone noticing you" even though my creation is in plain view of the shopkeeper!
this must be a bug, I checked and GF2 does not have this feature.
still kinda nice, though, I can take anything I want, and no one cares!