The Black Loch, green key bug.

[Catholicon]

I just fought my way to the end of The Black Loch, killed Dheren Kiettuc, and I was wondering why the quest didn't complete... then I noticed that the game didn't actually register me using the green key to unlock the first door.

I went back, but of course the door is gone now as I'd already opened it, so there's nothing to use the green key on anymore.

So that meant no quest completion.

Sure, it's easy enough to replay, but I was annoyed that I didn't notice this questbreaking glitch right away.

 

[Eoin-1]

The bug has been around for awhile. Their is a quest trigger in front of the green key door. Unfortunately you can open the door further away from the door then the trigger. Made up distances, the trigger is 2 feet from the door, but you can open it being 3 feet from the door.

So make sure you hear the DM, see the quest update text, see the quest objectives update, or slam yourself into the gate before trying to open it. I'm sure the bug is on their back log somewhere... they will probably get to it after moving the ladder close to the jeweled key gate so that it doesn't go through the wooden walk way.