Same issue as described by the Audi user, only with a Rivian R1T. Playlists display, forward/back pause/play work from the display and steering wheel controls. Selecting a specific song to play from the Rivian display makes the album art on the iPhone shrink like a command was sent but nothing happens and the current song continues to play. Not fixed in the 16.5 release candidate either. Started happening after the 16.4 update.