Yeah, im not talking about any of that, except maybe npcs accidently attacking other npc with aoe or Arrows, wich don't seem to go through to the right target, when someone's blocking, I don't know, I'm lonewolfing with wiz and Knight, but tooltip says Arrows are suposed to to through friendly units to the target. I've seen npcs kill eachother with this, wich is kind of retarded imo.
