Originally Posted by
Februs
I don't think I've ever been hit on my side or my back during a Boss encounter... but I think the risk of IR comes in during mob tanking, not boss tanking. It's not difficult to keep your mob positioned in front of you, of course, but in bigger pulls mobs tend to shove each other around a little. Mob's can't overlap hitboxes, so once you get a pack of 5 or more they run the risk of shoving each other out of position and can, rarely, get pushed to the range of your hitbox that is considered the "flank." It's not common though, and I think I've only seen something like this happen when there's a few big mobs mixed in who squeeze the little guys to the sides. It's kind of funny to watch them shove each other around for the sake of positioning.