Sonos binding with Napster channels


when playing an album from napster all the songs are added to the playlist and I can see in openhab the current artist and title.

But when playing a channel from napster I see in openhab the artist and title from the last song in the album-playlist.
In the sonos app I can also see the old album playlist, but although I see the right current artist and title from the playing track.

When I clear the playlist in the app (while playing the channel), it doesn’t change anything on the current artist and title in openhab.

Any ideas?