On Roon, selecting an album for which one or more of its tracks were added to the Library, will only show the selected tracks. But there is a link to “View Complete Album”, which makes available the other tracks. But, on Arc, this link is missing, so it isn’t easy to play the other tracks.
It seems Roon is intentionally ignoring this issue.
There is a closed feature suggestion. EDIT: In addition, there is an open feedback suggestion.
These have been discussed several times before over the last 3 years, here are a few examples:
Unable to display full album tracks on ARC - Support - Roon Labs Community
Arc won’t show complete albums - Support - Roon Labs Community
Arc album tracks bug - Support - Roon Labs Community.
Someone recommended to select the Versions tab in the album and select another version that wasn’t in the Library, this would then show all the album’s tracks. However, this is not a solution.
It only works when there is another version available to select, but there is no guarantee. And even if there is, the fact is I want to hear it from the version I added to the library, not some other version.
Please add priority to this long neglected missing functionality!