I went to Org and Thrall popped up and told me to go to silithus.
Quest named The War Within.
Quest text says I can use the scroll or just go there.
I track quest.
I have no scroll icon by quest, nor scroll in my bag, so I take the portal to Zuldazar, and the quest disappears from quest log.
Go back to Org and Thrall starts over, I am offered quest again, accept, track, back thru portal, quest gone again,
I thought it was maybe because my Drac has never done BFA, so I switched to Druid who played BFA a LOT and I have the same thing happening, Gonna try just taking the FP down south next …
EDIT: Similar thing is happening with the radiant echoes quest.
When I enter org the quest pops up to take the portal to Aszuna to got to Dal.
As soon as I step out of the portal, the quest is deleted from my log,
I go back to org and I get the quest offered again,
Using the Dal HS causes the quest to delete itself as well.