I was in a random Vortex Pinnacle Heroic last night and the group was very good. However as we came before the 'Star Shards' which is the mob right before the last boss, it bugged out. The Shards jumped into the walls and continuously bombarded us with undodgeable spells. Unfortunately we had to abandon the dungeon with the final boss only metres away.
I opened a ticket in game but wondering if anyone else has had this problem with Vortex Pinnacle or any dungeon.
Spartanz