Lately that if the boss is killed while in the middle of their breath mechanic, they will whip their neck towards dps stack for half a second before the dying animation occurs. I've experienced it on Lokk, Yoln and Nav each. It's almost like the game registers the boss' death half a second before it is able to cut off the mechanic, so the tank "loses taunt" because the enemy is "dead".
I run vSS multiple times a week and I noticed this started during the Elsweyr event, but I couldn't pinpoint when exactly. I initially thought it was purely a visual bug, but then a guild run had half the group wipe and the death recap said breath. ESO logs didn't capture those deaths though, because it was after Yoln's death had technically occurred.
Figured I'd start a thread in case others have experienced this too.