Have the Vero 4k and just installed the September update. My audio is set as 3.0 channels as I have left, right and centre speakers.
My audio is fed to the tv over HDMI and then over HDMI arc down to the amp.
Audio now seems to be feeding rear channel audio to the front speakers.
This has worked well whether pass through is enabled or not.
Anyway, just watching a show I recorded off channel 4 and the stereo audio on the adverts arc is fine, but as soon as the show starts with aac 5.1 audio the rear audio is sent to the front and you don’t get any dialogue.
I’ve set kodi as 2.0 audio temporarily and this has at least returned stereo audio correctly.