Finder continually loses my placed Favorites, and open folder locations

Upgraded to MacOS Monterey 12.1. - Since the upgrade, my favorite aliases keep dropping off my Finder sidebar. I have tried reboots, replacing the preferences, but nothing takes. They stay in place for a week then <<poof>> gone. Have been unable to find any post that remedies this issue.

I don't have to reboot for it to happen. I can walk away, come back and all open Finder windows that were open to job folders have reverted to a locations window, and all Favorites are gone.

Tried deleting the com.apple.finder.plist, then relaunch... works for a while, but eventually does it again.

I cleaned caches, which is a pain, but it eventually happened again.

Only thing I haven't tried is reinstalling the OS, I am hoping there will be an upgrade soon that will fix it.

Temporary fix is putting folder aliases on my desktop. When it happens, those stay in place, but the open folder related to it has reverted to Locations list.