I see there is a topic already about this from 5 months ago but it has been closed. Is there a solution to this bug?
Answered
volume control missing from some rooms in new app
Best answer by controlav
Make sure all devices are running the same firmware version.
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Don't recall but I find stuff missing from the app fairly often. I close and reopen it and usually things go back to what they should be.
Couple times they didn't and a force-close got me back working.
If it bothers you enough submit a diagnostic and call it into Sonos support as a bug. More reports usually means a higher priority. Forum posts may or may not make a difference unless there are a lot of users posting.
+24Make sure all devices are running the same firmware version.
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