I have just received two Sonos One speakers. I set them up in the Sonos iOS app and then in the Amazon Alexa app. All seemed to work well. I created a group in Alexa in order to play the same music on both speakers. When I request Alexa to play music on group "Sonos" (the name of the group I set up), only one speaker plays. If I use the Sonos app to group the two speakers, the music plays on both as expected. I would think I could tell Alexa to "Play music" on any single speaker and it would play on that speaker. If I tell Alexa to "Play music on Sonos" it would play on both the speakers within that group. Is this a known issue?