Hi mate, sorry, I don't know why but I've just seen this.Have you also had issues with Apple Music? Both issues started at the same time for me.
Yup, along with the face ID issue, I also seem to have lost a lot of music I'd synced on to the Music app on the phone.
I haven't yet had a chance to resync the phone to my Mac, which should hopefully still have all my music.
Did you manage to sort your out?