I was grinding Heroic strikes yesterday, in the hope of getting some good drops to bump up my light level. I had hoped to get a Skeleton Key to hopefully finally get an Imago Loop, since I've never had one. We reached the boss and took him down before he could go into the middle of the room as he does after you take his health down enough, and a Skeleton Key dropped! I was like "yes, let's open the chest", and turned to do so only to be given the middle finger by the f&£king invisible wall! Those invisible walls should disappear after you kill the boss, as the visible ones do. It was a massive troll. I only wanted an Imago Loop, my have you forsaken me Bungl?!