Cannot turn in “Speaker of the Horde” Princess Talanji vanishing

So, I talk to King Rastakhan to start the quest, follow Zolani, take the lift down, Princess Talanji tells me to signal the Horde, I set up the banner, get back inside, Princess Talanji presents the great seal and I complete the 3 tasks:

  • explore the great seal;
  • explore Hall of ancient paths;
  • explore royal treasury;
    And then, she says: “come see me when you are done looking around” and proceeds to move to the map table, next to Baine. But when she gets to the table she just simply vanishes! And I cannot turn in my quest…the question mark won’t even show anywhere on the map.

Any ideas of what it could be or what should I try?

Tentative done that did not work out:

  • reload
  • restart the game/restart the PC/login out
  • abandon and redo the quest for all situations

Had the same issue, I had to complete Allegiance of the Zandalari quest chain before she reappeared. Try that