Latest AppleTV OS does NOT like my saved videos...

I have a Mac MINI 2.6GHz i7 running as a media server and backup system for the house... Time Machine and RetroSpect for other options. I have ALWAYS been able to go to "Computers" on Apple TV and see everything on my MINI for playback... sharing previously iTunes with lots of music videos, home videos, etc. After updating OS & Music/TV, everything is OK except for the Music Videos!

Was running Mojave on MINI and updated to latest Catalina to confirm the problem (that's as far as this MINI will go). Catalina created other problems accessing 50TB of external storage for music, as well as RetroSpect backups, but that's a different complaint.

I'm just trying to get my shared Music library to work as it used to for all of my 4K Apple TVs. Yes, SHARING is on for Music on the MINI... everything else SHARES except Music Videos. Actually, I can play them, but TV remote options, back/up/down/left/right, only make the playback screen SMALLER and nothing else. I can only get OUT of the TV app by holding down BACK to "force quit" the app. Going back to it puts me in the same place unless I RESTART the device.

Any help would be appreciated!!