I don't know if this is an Apple Music issue, an iOS 11 issue, an iPhone 7+ issue or an AirPods issue...
Sometimes (and we're talking 1/5th of the time) when I put Apple Music on, the music plays fine and I can control it through the app, but when I turn the lock screen on or try to control from my Apple Watch then the music widget shows but no song shows and the controls are grey'd out (essentially as if something isn't playing).
At the same time the headphone icon for my AirPods isn't there. The music plays through them though.
The only way to sort this out is a restart of the iPhone, except this then gets rid of the custom controls of my AirPods and I need to set them up again...
Sometimes (and we're talking 1/5th of the time) when I put Apple Music on, the music plays fine and I can control it through the app, but when I turn the lock screen on or try to control from my Apple Watch then the music widget shows but no song shows and the controls are grey'd out (essentially as if something isn't playing).
At the same time the headphone icon for my AirPods isn't there. The music plays through them though.
The only way to sort this out is a restart of the iPhone, except this then gets rid of the custom controls of my AirPods and I need to set them up again...