I tried removing all my Harmony activities, re-adding them, removing my Sonos devices, re-adding them, and I tried re-programing the buttons but nothing works.
Everything was working perfectly fine (for 2+ years) before this update.
Best answer by Keith N
Hello there, everyone. Thanks for keeping the conversation going. Logitech is currently aware of a problem regarding Harmony remotes and Sonos. I will update this topic with any updates as they become available.