Cannot open Train me window at Boralus' Trainers.

[Ddraigfyre]

WoW Freakz link: ---
Character name: Fenwythus

Bug description: I went to Myra Cabot to learn Mining but clicking on the "Train me in mining" dialog doesn't take me further. Cannot browse her goods either unless it's the first dialogue option I choose after interacting with her. I have similar problem with Cooking, Alchemy and Herbalism Trainers, others normally let me learn their professions and browse their wares. I have tried talking her up on my other character but no difference. I thought that dropping Mining + Cata Mining that I have learned in Stormwind would help but that didn't make any difference either.

Proof: https://drive.google.com/file/d/13uBtGhuUWG2Fc7-HEdXwUJ2EBmruMSqz/view?usp=sharing