Can you please tell me if this works for you now? We found out it actually had to do with the destruction visual of "troll dropping". So yeah. "Shit," literally...
I've overwritten my old quicksave games in the meantime, so I don't know for sure whether the "real" issue was fixed. But I reloaded an old savegame from just before I rescued Alfie with a blood stone and so I escorted him again to Silverglen, trying to recreate the bug. But this time my savegames right after that quest in Luculla Forest aren't corrupted so I hope it's fixed now.
Could you perhaps elaborate in which scene exactly that troll drop got destroyed and where it is located? I can't remember destroying it tbh.
