This may just be a fault of my own (Forgetting where I put them or misplacing them) but I'm fairly certain that I have lost two of the three new Dragon Priest masks to a mannequin bug in the new house in Raven rock.

I placed Miraak's mask and 2 of the masks on the same mannequin, thinking I could use it for storage like I have used the other ones in the past.

Come back later to put the third on the mannequin, and the other two are gone, only Miraak's gear remained. Keeping in mind this is quite a while after I first placed the two.

So yeah, not gonna declare it an official bug (unless anyone else can confirm the same thing) but I would still warn others to be wary of placing more items on the mannequin than it can hold.

Don't fall prey to the same mistakes I made.

thanks for the warning sorry that happened to you

Better one man's loss/mistake, than the misfortunate fate of many.