After killing Torkild the note didn't appear on his corpse as it should have. When checking DLC2WB01 with the sqv command, the console indicates that his alias is NONE even though the quest is still at stage 15 (directing you to search him). This appears to have broken the quest since talking to Wulf in Skaal Village doesn't bring up the proper dialogue option.
You can correct me if I'm wrong, but I'm pretty sure Torkild shows up at a random world encounter spawn point on the island. It's possible the encounter had unloaded even though the scene with the player talking to him and then him transforming into a werebear seemingly played out normally. The encounter location was northeast of Raven Rock, so I may have been close enough for it to trigger with knowing it.