Arathi Highlands exploration - missing area

https://i.imgur.com/7Tar9xd.jpg
Faldir’s Cove.
I “discovered” it but it still says I have to discover it in my log, and I can’t get the exploration achievement for the zone despite having uncovered all other areas.
I tried staying for a while, circling around the zone, and logging out and back in. Nothing worked.

Edit: Talking to Zidormi resolved the issue. My guess is that there was a bug with the territory changing factions, because it’s Alliance controlled today.

This also happened to me in Darkshore, again Alliance controlled, again required me to talk to Zidormi to fix it. The bug is definitely to do with that.