Roon ARC has a bug when playing albums. If you listen to an album via ARC and then stop (in my case because I have reached my walk destination) and then at some later time restart ARC and click on the interrupted album track to continue listening to the remainder of the album it plays just that single track rather than resuming album play.
After that track has finished ARC stops playing with a message “Nothing currently playing”. Clicking on the next track in the album will play it and the remainder of the tracks in the album
I believe this behaviour is ARC only and not Roon itself.
This is ARC on Android 14 on my Google Pixel 4a 5G and ARC is well behaved in most other situations.