In the Oshara's Council mission "The Only Lead", when I land the killing blow on both the Alister mid boss and the drake riding end boss, my player character is killed regardless of current health (full or partial). I re-tested and verified this on 3 consecutive mission restarts. On the mid boss this is more of an annoyance as it just requires you to burn an unwarranted revive, however when this happens on the drake riding end boss it immediatly fails my mission and dumps me back to town, which is a game breaker as it is blocking progression.