Currently there seems to be a bug in the Stonevault dungeon on Mythic difficulty. The Forge Speakers fight kept starting before anyone could hit the boss.
We tried resetting and dying on purpose to make it work. On the last attempt, the group split and my body stayed dead, in combat.
After a while, I used the unstuck character service in order to get my corpse out of the dungeon. It only teleported me to the entrance of the instance, and still in combat, unable to release.
Would be nice to get some help here.