Hi,
after returning from Francia to Ravensthorpe, I headed to the hunter to deliver Ghost Auroth trophy. He said something about it (something like "interesting, I've never seen anything like that"), an interface with legendary creatures from the base game popped up and after that the trophy has not been removed from my inventory and I can't locate it in the longhouse.
I am not going to provide a video demonstrating this issue as I would need to load a previous save. My saves in the clould should be up-to-date. You can check it and hopefully fix. I know adding new item packs is quite time consuming, but I (and probably others, who experienced this bug) would appreciate a fix to this bug (and many many more bugs as well....)