Oldstones Dungeon Animus Bug

Oldstones Dungeon in Scosglen has a repeated bug where there is not enough animus in the dungeon (or short one elite with animus) to complete the second part of the dungeon. I tried resetting the dungeon, closing the game down and Battle.net completely, and clearing my cache. This dungeon is needed for the achievement Scosglen Delver, and I currently cannot complete it. I have tried 4 times now.

Sept 16 4 months still having the same problem when will this be fixed?