So I just ran some tests on my Ultra, gen3 subs, era 300 (surrounds) system. I’m getting what’s supposed to be rear surround audio out of the height driver on the Era 300s. I am getting height audio out of the height driver but I’m also getting rear surround audio out of it too. I used an Atmos Test app on my Apple TV 4K. 
 

Anyone else seeing (hearing) this as well when 300s are being used as surround speakers? 
 

Has Sonos addressed this anywhere?