Game Mechanics: Pet won't go through false walls in Sol A

[Lentanlio]

I noticed this 4 times in the past 2 nights. When my character goes through some of the false walls in Sol A, his pet will take the long way around causing a big train. The problem spots were in a false wall in the narrow passages next to the Foreman room (the pet managed the false wall IN the Foreman room alright, but pathed badly on another one nearby), and the false wall in the hallway NW of the goblin merchant room. Thanks.