Why a npc (I think it is lynch king) is stuck in the middle of my screen and I can't get help fixing it?

Playing WOW War Within.
Waunder is main on Nazgrel realm.
This npc in the middle of my screen shows up on all my characters.
Have put in bug reports, still nothing being done to fix.
This npc in middle of my screen is not one of my characters, it is a game character.
I think the character stuck in the middle of my screen is the lynch king.
How do I get help if I have an odd thing happening?

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