I have a Sonos SL and a new Beam in adjoining rooms. The Beam is connected to a TV via audio return channel.  In the app, I group the Beam with the SL, and for the Beam I enable TV Autoplay, and enable Ungroup on AutoPlay.

I turn on the TV, but the Beam does not Ungroup. 

I’ve powered off and on the Beam and SL - no change.

How can I fix?

(If helpful, diagnostics 197345318)