Pet ability bar gone

Hello. In sota and ioc etc whenever one enters a vehicle (catapult, demolisher, glaive thrower) the pet bar disappears and doesn't come back until after a relog. It's kind of annoying since I play a warlock and a hunter. The realm is Deathwing. Is there some kind of /script to fix that, like /script PetAbandon() for a bugged vehicle? Or should I just dismiss the pet before entering a vehicle?

Thanks in advance.