I was so happy with the 14.18 release. All the previous issues were fixed. I did not want to update to 14.19 but the system would not allow me to add any new Sonos one SL until I performed the update. Now the Sonos one in another room outplays my arc, sub, two ones in the living room. This updated affected something again for the arc with surround configs.
We should have a way to stay on a firmware we are happy with and not be forced to update to add speakers. Now I lost the sound I loved when they fixed it in the 14.18 version.