In the Hall of the Drust King bug

This topic is basically the same as In the Hall of the Drust King. I’m trying to finish the Kul Tiran race related quests and can’t progress. I can see the Drust King very briefly through the ground before the cutscene shows, but once the cutscene’s over, he basically gets despawned/transferred to another phase where I can’t see him. I’ll go out in and out of the tree to see him briefly there and then just disappear, so I can’t ever finish the quest. I’ve tried re-logging, reloading, abandoning the quest and re-grabbing it. So far none of that has worked.

Any help would be appreciated.

Edit: I eventually figured out how to do this. Basically had to hearthstone out of the area (hearthstone was in ardenweald, though I don’t think that mattered) and then come back to the area to reset the phasing.

I find this bloody quest a waste of time. Didn’t kill the King but end up 3X being daze then the bloody king comes back full health and blah blah. Then quest says to get out of the Chamber and that finish the Quest… what a waste of time! Why was this Quest even created ??? a filler?