MusicKit + AirPlay

Hello, I'm working on a MusicKit based SwiftUI app. I've integrated AirPlay using the AVRoutePickerView like so:

struct UIKitAirPlayPickerView: UIViewRepresentable {    
    func makeUIView(context: Context) -> AVRoutePickerView {
        let routePickerView = AVRoutePickerView()
        routePickerView.prioritizesVideoDevices = false
        return routePickerView
    }
    
    func updateUIView(_ uiView: AVRoutePickerView, context: Context) {}
}

The AirPlay menu appears as expected, and selecting an AirPlay device functions as expected. I'm currently sending audio from my app to a HomePod. However, the state of the AVRoutePickerView does not reflect the playback state. There is no cover art and it says "Not Playing". When my device is locked, my lock screen shows the album art, metadata and AirPlay routing as expected.

My app uses the ApplicationMusicPlayer however I encounter the same behavior using the SystemMusicPlayer.

Any guidance on how to troubleshoot this? Is there any other way to integrate the system AirPlay picker into my app, or is this my only option?

Thank you for reading.