I was running Let Sleeping Dust Lie, clearing mobs right before dropping the barrier for the final fight, and I suddenly get a split-second loading screen and find myself floating in the water just outside the quest entrance. Clicked the quest entrance, and found that the instance had immediately reset itself too, so I couldn't even go back and finish with a reentry penalty.
Has this happened to anyone else? How about in the last 15 minutes or so?
And yes, I bug reported it.