Yesterday, my Samsung Galaxy S20+ updated to the November '21 update patch. Now, when using Bluetooth in my car, the Now Playing is blank on the car display. It worked prior to the update. Neither MMA nor the car's infotainment system were updated, just the phone OS.
MMA was set with "Limit size for external apps" to 200. Setting this to 0 works around the issue. Android Auto is unaffected with this setting in either position.
Bug introduced in Android (Samsung) update
Moderator: Gurus