While doing a run and entering the security vault floor, I ran into a floor that was un-walkable on. It was a necessary  room to enter in order to activate the floor "key" to then open the final door to transport the bot too. Neither characters nor bugs could walk across it. It happened where a single bridge met the room and at the end of the bridge, was the floor that could not be passed. Only thing to do was to die or manually end run.