No two bosses. Blade lord and Amber-shaper. And i never use Xuen right at the start. Esp since i start second most the time so i use him when its my part tanking so i have more ap to boost him.
I honestly have no glue what happened.
All i did see was the boss suddently having Xuen in his target and thats not something that should happen.
And no it was not only short for some random ability and then switched back.
They both stayed on him.
Very strange.
Never happened before from what i can tell too so ya..