Files are synced with iCloud still they appear and disappear in Mac mini
Mac mini 2018
macOS Ventura 13.5
All my files are synced with iCloud. I have confirmed that I have plenty of free space on my hard drive. Today I set up a new folder on my desktop and downloaded some PDFs from the Internet to it. These files are not contaminated in any way. I clicked away from the folder, and when I went back, half the files had disappeared. I opened a browser connection to iCloud and located the very same folder, but now all the files were there. I went back to my desktop, and *some* of the files were there. As I watched, the files disappeared from the desktop--but not from iCloud. For ten minutes, I just sat there and watched those files appear and disappear and reappear at random on my desktop.
I rebooted--twice. Those files on my desktop are still playing peek-a-boo; one moment they're there, the next they disappear.
What the **** is going on here?
This is especially scary because for years, I have been backing up my desktop and documents to iCloud. Until now I thought it was faithfully syncing between my Mini Mac and the cloud. Now I don't know if I can trust iCloud.
[Re-Titled by Moderator]
Mac mini, macOS 13.5