Just hit that one. Double and triple checked, but alas. The quest mark is gone, the addon still points to the keep's inn.

Amberpine Lodge in Grizzly Hills also stands open even though I 100% took it.

Nesingwary Base Camp. Last one, got the achievement, but these 3 buckets are still marked on my map.

Thanks for the feedback. Out of curiosity, do they disappear if you relog/restart the game?

It could be a issue with the quest registering when you complete them, or Blizz changed some quest IDs and I gotta update my database on some nodes.

Funny you asked. :) I just reload the UI to test exactly that chance. Seems like they are gone for good, now.

I will try update the code that detects completion. Thanks for the heads up!