Why are there people in Mac's Photos "People" who I can't add their last names?
There are a couple of people in my Mac's Photos app that I find in "People" that only have first names. I edit them, add a last name or select a full name in the drop down menu and a few seconds later, the names revert to only first name.
What's going on here?
iMac 24″, macOS 12.5