Recently I was notified by Sensus that there was an update available for the Spotify app in my 2018 Volvo XC60. The upgrade notice said there were new features and fixes, etc. (I have otherwise been using the Volvo Spotify app successfully since last December.)
So I upgraded.
Now it seems some of the core features of the Volvo Spotify app have disappeared (e.g., I can't save music, there is no listing available of other songs on the album, etc.). I thought perhaps this was because the new app didn't recognize me as a Spotify Premium subscriber, so I logged out and logged back in. That didn't fix anything at all.
Then I Uninstalled the Volvo App, hoping to reinstall it cleanly. Unfortunately, the Spotify app completely disappeared and even with a full reset of my car's Sensus system I can't get it to reappear.