So, I haven't seen any other threads about this, but I've noticed a bug in almost every run I do of Black Drake Villa where, after killing the last boss, You are then stuck in combat against... Something. From what I can tell, it's caused by people leaving enemies behind and not killing them, which happens in basically every farming run ever
This isn't a problem if you leave the group or instance, but if you want to go back and loot any chests you missed, you'll suddenly find yourself unable to go though doors because you're in combat. Worse, my group tried doing the Secret bosses, and we couldn't activate the thing at the end to summon the last boss because we were in combat. We all had enough of the Lights, so it was purely a matter of the game being glitched. We ended up killing ourselves to end combat by repeatedly Jumping of the ledges into the pit in the last room, which took a long time, especially for the healer and the tank, who both had high Health regen.
This is a really annoying bug that needs to be fixed, for my own sanity and the sanity of every farmer.