Plaguelands Swamp wildlands
I encountered the plaguelands swamp wildlands area in the game I'm currently playing, and despite killing all the creatures, destroying all their lairs, and killing Morian the Ruin of Summer, the area is still showing as wildlands and the quest on the right side of the screen still says 'Clear the Scarred Tiles to heal this diseased land'. As this is the first time I've encountered this wildlands zone, there could be something I'm missing on what needs to be done, though I don't know what. However if the above listed things that I have done are supposed to trigger the removal of the area, the trigger did not fire in my game for some reason.