Grommash Hold phasing

I’m not sure why tickets aren’t a thing anymore and i’ve been looking for it a bit too long so i’ve decided to just post here. My characters all have the bad phasing outside Orgrimmar’s gate but I went to legion Dalaran and talked to the lady at the hold and completed the intro for legion but now the inside of Grommash Hold is stuck in previous phasing with Sylvannas there and I have no clue what to do now and how to be rid of it altogether