Same situation with MacBookPro M1 Max and Ventura 13.5.2.
The only two solutions so far are "Compressing / deleting / decompressing a folder" and "update OS / restart / toggle iCloud off-on". Neither are practical given the length of time required.
I think sync should "sense" update date-times on files, and act on such signals. But apparently MacOS is acting on some other condition. Does anyone have another solution to offer?
Thanks