Thanks for taking the time to reply. I just did a fresh install. Problem still there. If I am listening on my computer then add to queue works. If I am listening via Spotify connect to Sonos then add to queue doesn't work.
Did you take those screenshots while Connected to another device, if so what was it? Those screenshots are clipped so they don't show whether you were playing locally or what if anything you were connected to.
I, and a lot of other people, are hitting the same problem where add to queue works playing locally on the pc, but simply does not work when connected to an external device.