There seems to be a new problem that was recently introduced where music is streamed on an Amazon Echo Show instead of on Sonos speakers when Alexa is asked to play music.
Because of the ducking problem which lasted 12-15 seconds for all of my 10 Sonos devices, I was advised to create multiple Alexa groups and add specific echo devices to each group along with specific Sonos devices as speakers. This fixed the problem with the 12-15 second ducking occurring for all of my 10 Sonos devices and instead occurring for just the Sonos devices that are in the same group as Echo device that heard the command to play music.
Everything worked pretty well until a new problem started occurring in the past couple of weeks. Now, the music I ask Alexa to stream is played on one of my Echo Shows and not on my Sonos speakers. I have not changed a thing. For each Alexa group I have one or more echo devices and one or more Sonos speakers.
How do I get the correct behavior back?