Same game, second wildland cleared, same result, the quest won't complete. This time it was the scarred lands, where you have to defeat Morian the Ruin of Summer. Defeated all monsters in the area, defeated Morian, got the heart of Morian, but the wildland won't clear and the quest won't end. Here's a pic to show that all monsters were cleared:
Having hit control-U earlier, I took the opportunity to check out all the monsters in the left half of the map in case one of the wildland denizens had wandered outside (I had previously defeated two troll armies that had wandered outside). All of them were monsters and ruffians rather than denizens of the wildland, so I'm pretty sure that I had indeed cleared it.
Also note that both of the "2" stack indicators in the picture above are a result of the reported bug that those icons don't always disappear. I had, in fact, killed the monsters on both of those tiles.
Here's a saved game from 3 or 4 turns after I killed Morian.
