If someone has a Sonos Home Theater setup with a playbar + 2 Play:3 (or Play:1) as rear speakers, I would be interested that you provide the value of the variable ZoneGroupState (it is now available in the Help tab).
Let me know if such a setup is correctly managed by the plugin.
It is for me, I am still using the version that you had fixed for me a while back and is grouping and un grouping the playbar zone properly, I do not have it setup with left and right speakers though, just a sub.
Best Home Automation shopping experience. Shop at Ezlo!