I have a Samsung A54, new. Android 13, OUi 5.1.
Note: I can start Poweramp version 971-976.. manually and have the same issue with music display. The music will play! But the Poweramp will not send the music data to display. I also have Steering wheel control that will allow me to Next or Back, I can hold down the next or back button for more than 3 seconds and Poweramp will Fast forward through a song, or fast reverse.
The head unit in the nissan Altima Is the original factory radio. I believe the OS for this is an Android OS, But a proprietary version. The Altima is a 2021. The Head unit software is the latest version Firmware that Nissan recommends, At least to my last check.
The Lexus is a 2012, RX350. The head United's proprietary, is not Android, But reacts the same way.
I have a Android phone, A54, Iand I do not think its the issue because, I had a Samsung A20, It did exactly the same thing with Poweramp.
Just a quick reminder of what I said before., If I force stop the Powermp, using the app properties force stop, the data from Poweramp works every time.