I queued for a random dungeon and got Pit of Saron. When I entered, the group was at the beginning of the instance, ready to go. However, we slowly realized there were NO bosses in the instance, not even the final boss. All the trash mobs were there, but nothing else. We cleared all the way to the end for nothing.
I can't tell if it was a bug, or if one of the players may have been re-queuing an empty dungeon to farm for the Hilt drop, fooling unsuspecting players into clearing the trash. What is going on?