I'm having an issue where if I cast a webpage and play a video on it, then press the Home button, the video stops but the audio keeps playing.

I can find no way to return to the video or to stop the audio except opening an app.

Obviously I can disconnect using the cast device, but I'm miffed that there is no UI option to disconnect. Or that simply pressing the Home button doesn't disconnect audio like it does video.

Does anyone know of any workaround for what Google support has described to me as a "feature"?