Hello
I started a playback using AVAudioSession Playback Category using AVPlayer and subscribed for the remote notifications.
Then I tapped lock screen. My audio is playing and MPNowPlayingInfo updates lock screen info right way. The background task is started also.
Then I tapped next button. My logic stopped AVPlayer and started a playback using MPMusicPlayerController.SystemMusicPlayer for iTunes songs.SystemMusicPlayer updates lock screen playback info right way.
Then I tapped next button. My logic started a playback of next song using AVPlayer using MixWithOthers audiosession. The playback started, but I cant no longer update Lock Screen Playback Info (title, artistname, artwork) until I make an app active again.
Background Modes are configured right way with support background audio.
Hope, somebody faced the same issue.