I have this same bug. Under the same circumstance, I finished the white forge quest, went outside via the jump path to the watch tower, got the narrator screen, then went back in to see if it had changed. Now it has reset and is fully lootable again. I didn't do a full clear to see if you can do the quest again or not. Here is my saved game https://www.dropbox.com/s/tkocfc9r1cegq8n/Pillars%20of%20Eternity.zip?dl=0