Seriously...
I'm in a group of three...it doesn't matter if I tag the mob first or not -- it runs past the other 2 and attacks me...every time. I'm doing normal bow shots, maybe a poison arrow...nothing out of the ordinary or massive in damage to draw aggro.
The funniest (and saddest) time this happened I was all the way across a field, just standing there checking inventory, when one of my group-mates pulls 2 cultists. She manages to keep one, but the other ran across the field to come beat up on me.
Anyone else this "attractive" to mobs?