Certainly not, to my knowledge, a ‘known’ issue, using either S1 or S2. Without more details, I’d suspect a communication issue between the controller, whichever you’re using, and on whatever device you’re using it on, and the Sonos speaker you’re using, whichever one that is, and however it is connected to your router.
Given the lack of information, I’d start with the most common case of simple wifi interference of some type. If that FAQ doesn’t provide a solution, I’d be looking at the less common duplicate IP addresses issue, and unplug all Sonos devices from power, then reboot the router, and waiting a couple of minutes before plugging back in the Sonos. After that, I’d likely check the Sonos devices for updates in the controller.
That is a bunch of guessing. If none of that helps, I would recommend that you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it. But don’t post the resulting diagnostic number here, they get sensitive about GDPR.
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.