Thanks for the report @t812 but this actually looks right to me.
Just to reiterate, in Roon, āFavoritesā means the content in your library youāve marked as such. Once you favorite a track (or album, or artist, etc) you can easily find this content again later by pressing the Favorite button at the top of the various browsers, which will filter your collection down to just your favorites.
Not everything you play in Roon is actually in your library ā you can also play content from TIDAL thatās not in your library. Because favorites are a subset of your library, non-library content canāt be marked as a favorite. If it was, it wouldnāt show up when you browse your favorite albums, artists, tracks, etc.
I would like to make this experience clearer since itās clearly confusing people, but the issue in this thread is that content which should be āfavoritableā doesnāt react properly in the UI ā you click the heart and it flashes, but the heart doesnāt āfill inā.
In the video posted above, the hearts are greyed out, because the content is not in your library.
Itās clear the graphical treatment here could be better, but you can see the difference playing content from your library:
Versus whatās shown in your video @t812:

Love that Chicano Batman btw 
Anyway. weāll get the treatment cleaned up, itās not as clear as Iād like.
Also thanks for the detailed information @John_V ā Iām going to have our QA team walk through these steps again and see if we can finally pin this one down. As mentioned before, weāve never been able to reproduce this issue at will, but Iām sure we can fix it once we know how to make it happen.
Thanks for your patience everyone!