Over the last day or so, when I add something new to my Apple Music library (either on iTunes or on my iMac) it doesn't sync through to Sonos, just like the issue we experienced a month or so ago. For example, I added a track to my library yesterday morning, manually updated iCloud Music Library, but it still doesn't show under My Music in the Apple Music section of Sonos Controller, whether I access the controller on desktop or via an iOS device.
It shows in my iTunes library, and synchronises to all my other Apple devices (so iCloud Music Library is working ok) but won't show up in the Sonos app, either in Recently Added or if I look under Artist/Album etc. It is a very similar symptom to the issue we had a month or so ago, although admittedly could be something completely different! I've tried removing Apple Music from Sonos Controller and then re-adding it, but still no luck. I have run a diagnostic - ref 8440102. Thanks.