I have three Sonos Play:1 speakers which are sometimes used individually, sometimes grouped. When I group two or more speakers, on the desktop app I cannot control the volume of individual speakers, only the entire group. The small pop-up window with the individual speakers is visible but the volume sliders do not work. This is only a problem on the Windows desktop app - the app on my phone is fine. But it is a problem on both Windows laptops that I have. And it appears to have arisen only in the last few days.
Any thoughts?