Why is Photos now removing last name from identified faces?
Since upgrade to Big Sur a few days ago, Photos has removed the last name from people in the Peoples section of my photo library. I can reassign the last name, but it does not "stick" for more than a few minutes. There are no other duplicate sets of photos for the same person that need to be "merged" into one person's people file.
I have 393 people identified, including 10 "Favorites". The problem only appears to be happening to my "Favorites", but it has happened to 5 of them.
iMac 27″, macOS 11.0