I have TIDAL as part of my roon setup.Some music that I find easily searching directly in my TIDAL app does not appear anywhere when I search via my connected roon app
Finally figuring out you need to “add to my collection” in tidal app, then go to Roon, go to Tidal, go to my tidal collection and that song will be there under favorite tracks. For playlists, mark “add to my collection” in tidal app, but in Roon go to playlists from main Roon menu and then tidal playlists. That’s my work around anyway. If anyone has something better please share.