Effect Expert Challenge in the summit states I need to have 3 hostiles disoriented simultaneously and I need to do it twice. I have used banshee pulse and done this multiple times to groups as large as 4 or 5 enemies and none of the have counted towards the challenge. I really can't think of any other way to interpret the wording of the challenge. Is this just a bug? this is my last challenge before i'm done with all 30 summit challenges.