Was doing Contract of War this evening and the "a guardian mephits" kept spawning even after the loot chest spawned. Had to keep killing them to finish handing out loot. Not a big deal but irritating. First time it happened was today. Anyone else get this?
The only time that happened to me, I happened to have the key from a prior run on me (the square thingy from the third boss); I had had to quit to help someone on something else. Then when I did the mission again later that day, I used my old key to open the door without looting the new one, and the mephits didn't stop coming.