My wife and I both have a 60S. They are connected to each other via Bluetooth. When we switch from Bluetooth to Mesh 2.0 (we have Mesh 3.0 turned off), we get a loud, looping noise and a massive, repeating echo. To resolve this, we turn the 60S off and then back on again, but without enabling Bluetooth, switching directly to Mesh instead. That works fine. Is this normal? With the 30K, we were able to switch from Bluetooth to Mesh without any issues.