Well, I'm not sure if this happened to anyone else...but last night, I'm going through a mission, clearing rooms as I go, and I'm at the end of a 6 room series. Straight line, no turn offs, or side rooms. So, I have 6 empty rooms behind me.
I'm in a small room, standing about 3 feet from the doorway, while my bot is beating up the bad guy. Then, out of nowhere, a mob spawns in the room behind me, and roots me, and starts shooting me, of course, not breaking the root.
Bot kills the badguy, turns around, and decides to run into the wall. I sent 30 attack commands, and the damn thing wouldn't side step to the right, 3 feet to attack the mob.
Needless to say, I died. Thankfully I levelled 120k xp earlier, but this isn't the first time this has happened where mobs will spawn/appear behind me, in rooms I know was cleared.