I am on Android 6.0.1 and Android TV 5.1.1
When casting to my TV all works fine, until the current track is finished. My TV nicely advances to the next track, but from that moment on I can no longer control it from my phone. My phone still shows the previous track as if nothing is playing anymore. Trying to start other tracks or skipping does not have any result. I need to stop casting and start casting again to get control back.