Twice now I've received skeletal marionette parts in Witches Grab Bags from the Impresario (2020 Witches Festival). Each time I took the part from the bag it appeared in Supplies, and when I pressed 'use' I heard a faint click and the part disappeared. I got no warning message eg to say that 10 parts are required (like I do get for Throwing Bones). The Collections | Mementos | Skeletal Marionette page does not update with any sort of count to indicate how many I have / need. I've scoured my inventory and no sign. This has also happened on two characters on my account.
I'm on PS4-EU
Anybody seen a similar thing? I've raised a bug report.