Before 1.8 there used to be 2 different icons in the album> tracklist view, if a track was in your library there used to be CD icon and another icon for tidal/qobuz.
This helped me understand if a track was in my library or available in streaming service.
It was very helpful for me. If I liked a track in TIDAL I could figure out if it was already in my library.
Unfortunately they are now merged and only a CD icon and a multiCD icon according to the number of track in the database is what we can see.