I have had a Sonos system for many years, 9 x Sonos One, 1 x Beam 1 x Era 100 & 1 x roam. I updated a playlist using the old Sonos app, (as we know that isn't a feature the new sonos app affords us!) and since then music drops ALL of the time. I could be playing music with all the sonos one speakers grouped together, and either one of the stereo pairs would drop/ unpair itself ( so only one speaker of the two would play), or one of the single speakers will not play music, although the app shows them as playing music.
Sonos spent weeks telling me that it was my wifi, to the extent I was going to leave my internet provider. They told me to wire two speakers into the router, which I did. They also told me to buy a mesh system, which I did… and it still hasn't fixed the issue. What sonos is failing to admit, is that this isn't an issue with my wifi! I can play songs on my speaker without any issues if I airdrop the music to my speakers, not an issue. I primarily use apple music, but I have noticed the issue when playing from a playlist that has songs from Spotify. I only seem to have issues when I use the sonos app directly. I have spent so much money with sonos, only for their own app to fail and for them to gaslight me into thinking everything else is the issue bar them.