I read about this bug on the forums. But until it happens to you....
Last week it happened to me. He engaged at half health. I hit him 3 times (no adds).
He goes back to the throne. I win. I feel.....cheated. After hearing how tough the fight was and how it was nerfed and not nerfed I was hoping to see for myself. Never got the chance.
What sucks is that its your class quest and story is important and I didn't get to experience the final fight. just a letdown.
To make matters worse, I send a ticket just to let them know and they don't respond until yesterday, with a half hearted..."sorry we'll come back to you".
Then just yesterday they don't credit me for a war zone that I won.
Now I feel like one of those posts that just *****. just a really frustrating week and a half with the game.