I have a large problem with the daily quest "Wulon, the Granite Sentinel". After accepting this quest, I flew down into the halls to go about killing him, only to find that the halls were completely empty. I thought this was really odd, normally there's dozens of people here and NPC bodies everywhere. I rounded the corner to Wulon's area and sure enough, he's not there.
So I ran back out into Vale, dropped the quest, picked it up again... same issue. I relogged and that didn't fix it. I also dropped the quest, relogged, and picked it up again... still broken.
I seem to be permanently stuck in some other phase (in halls only) where no NPCs, players, skeletons, or anything exist. Halfway down the hallway the speed runes on the ground disappear, then it's game over.
I'm really confused, and would love to complete this final daily for the chest, valor, and rep. How do I fix this?