just triggered a Roon backup while music was playing on my Sonos system -> streaming from Qobuz using Sonos application <-
playback stopped and play queue was cleared 
I poked at this a little, itās basically the same problem as this: Music stops (Sonos) when Roon control device is closed or loses connectivty [fix in for next build]
There should be a fix in our next build, whenever that is.
thank you @ben
not sure though itās the same issue
I meanā¦ Iām fine with playback stopping when Roon takes a snapshot before backup. what Iād like to possibly having fixed isā¦ Roon also clearing Sonosā playback queue
From my point of view, the problem in both cases is āRoon doesnāt check whether itās actually playing to Sonos before doing the work of ending a stream (stop, clear queue, some other stuff)ā. Thereās no reason for Roon to do anything to the Sonos device if itās not actually playing.
Iāve tested my fix with the Sonos app, it seems to work.
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