So I encountered this glitch today, where the boss of a quest is immortal (but his health bar goes down to zero instantly), and I don't take any damage at all. And it's not even the first time I see it. The same thing happened to a friend of mine in an early-game quest in Stonefalls (can't remember the quest he had trouble with though). PLEASE help me get through this damn quest, I've tried fixing the problem for about 1 hour now! I'll add a video example of what happens when I try to go into the final battle of the quest that's glitching out:
https://youtu.be/DblUnXQPDbQ
I have tried:
1) Exiting the quest area and re-entering again
2) Fast traveling away from the area and running all the way back again
3) Restarting the game client
4) Sitting down in a corner crying about all the time I wasted on this