So, Apple released a new beta developer update today for Catalina and also for iOS. I have downloaded both of these and installed and unfortunately, still does not sync the albums within folders! Via USB CABLE.
I got my hopes up initially as it a pretty big update and took about half an hour to install (Catalina update) ...
on a side note, whilst there have been “workarounds” posted , my workaround was to make smart albums use the rules “album name is “ and then make a smart album of the standard albums that don’t sync. I placed the letter Z In front of these albums so they sort to the bottom of the folder list under the my albums folder , which as you all know , means it will sync. Interestingly enough I synced about 45,000 photos and videos all up... and every photo and video syncs without issue no duplicates no black tiles. Two days later I sync’d again and for the first time ever the sync process did not remove all the photos and re-add them again. I think that problem occurs with standard albums and not smart albums?! Interesting and annoying behaviours ! I would love to Bill Apple for my time!!!