Missing raven feathers

[Vazev]

Tonight while playing I found 3 raven feathers, I clearly noted it in the logs since I got them in close proximity to each other which is very unusual. And when I check my inventory now there are no raven feathers to be found. I logged out normally and got my xp, so how come only the feathers are missing? What could have happened and is it possible to get the feathers back? Since they represent a rather substantial fortune for me as a new player.

Thank you for an otherwise great mod!