When Goliath goes to free Eliza from the prison, Proteus, disguised as Elisa, sends Goliath to the control panel (which at the end of the hall, with Elisa's cell to the right) to disable the force field. As Goliath approaches the panel, Elisa's cell door is closed as it should be. It cuts back to Proteus and back to Goliath, this time the door is open/missing. It cuts to Proteus and back again and the door is back.