I don't search often so I can't say for certain it's the beta but it used to work consistently and now it doesn't, even in safe mode. No results returned no matter how long I wait.
I'm running the latest MacOS Catalina.
I also tested in MacOS Mojave (unraid VM), same result.
I have a Raspberry Pi shared over SMB where search from the same two clients works fine.
Diagnostics from safe mode attached.
nas-diagnostics-20201027-1319.zip
Minor
Below I include my Unraid (Version: 6.10.0-rc1) "Samba extra configuration". This configuration is working well for me accessing Unraid shares from macOS Monterey 12.0.1
I expect these configuration parameters will work okay for Unraid 6.9.2. The "veto" commands speed-up performance to macOS by disabling Finder features (labels/tags, folder/directory views, custom icons etc.) so you might like to include or exclude these lines per your requirements.
Note, there are probl