I've got 9 devices running happily on sonosnet (S1), and a single Play 5 Gen1 on WiFi in a distant room which sonosnet doesn't reach but which is strongly covered by mesh wifi (Asus AX Zenwifi mini). The WiFi connected device disappears and reappears from the list of devices randomly... it plays absolutely fine when it's there, and there's no problem with the WiFi connectivity on the mesh. The sonos is still shown as a WiFi connected device to the mesh node when it's disappeared. I can re add it each time to speed up the reappearance process, but it's obviously pretty tiresome doing that.
Connection report below.... the troublesome device is the one called Storage, and it is about 2 metres away from the mesh node so definitely has a good signal.