Yes the track is available on a different version of the album, but not THIS version (in this case, which is a new remastered version that has supplemental tracks.)
Just checked another missing track on a different album and Roon has two versions from Tidal (one with tracks missing and one complete) even though Tidal just as one version.
This is fairly common with Tidal and Qobuz streaming services - they change the version of an album (or withdraw it completely) because of licensing changes. Unfortunately, these changes are not flagged up in Roon at present, they creep up on us unawares…
Some unavailable tracks just appear a week or so later
No way to predict which albums this happens to. Most, but not all, get added correctly with no unavailable tracks. But some will have unavailable tracks requiring above corrections.
This is one of the reasons I have stopped adding any streaming albums to my library, Roon is ill equipped to do with the constant changes that happen and it’s integration can’t seem to cope with this.
If you look you will see that is has not been released yet. What you are seeing are pre-release tracks to build anticipation. So, I wouldn’t add the album to your library until it has been released.