When choosing a track in the personalised My Mix playlists in YouTube the track selected is not the track that gets played. There doesn't seem to be any reason for why a particular track plays. It's in the playlist but is not anywhere close to the track actually selected.
Track selection bug
Interesting.
I would recommend that you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it. Don’t post the resulting diagnostic number here, Sonos’ lawyers get sensitive about GDPR, I suspect.
There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.
When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.
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