I am experiencing an issue that when I tell my HomePod to play audio "everywhere" (meaning on it and on the Sonos Beam) sometimes the audio will play on the Beam, sometimes not, but every time, after invoking that command the Beam seems somehow stuck on AirPlay, or confused, or something, so that I cannot change its audio playback to Alexa, or to the TV's audio, or to anything at all.
Alexa will talk to me, but all audio playback is mute, regardless of audio level, source, etc. I have tried "unchecking" the Beam as an output in the HomePod's AirPlay selector (from my phone). I have tried changing the audio source in the Sonos app. The only solution I have found it to unplug the Beam and then plug it back in.
Seems like an AirPlay 2 bug. I hope it gets fixed soon.