Sonos OS (even the current S2) uses older / pre-standard STP path costs which makes it incompatible with the newer RSTP protocol which was introduced in 2001 and is the default for UniFi switches. STP ...

It certainly didn’t help that users couldn’t undo the update and go back to the S2 version of the app, even if it had its own ...

Just last week Sonos admitted that it was considering bringing back its older app, S2, as a stopgap measure while it ...