SONOS & ORBI : FW V1.5.0.12 - not working anymore

thanks for your feedback and suggestion!!

but as written above , my origin setup was ORBI (Router mode) connected to modem. SONOS bridge connected to ORBI directly --> and it was working until the new FW update, as the first issues came up, i ve changed my setup to nearly the same as your : modem ( in router mode with active DHCP) , ORBI ( AP mode) connected to port 1 and SONOS bridge connected to port 2  - but this was also not working - therefore i ve deceided to set the ORBI to router mode to get both networks separated . ( btw. SONOS and Orbi were already set to operate at channel 1 and 11 , and no other network switch is spanning trees ;-)  and no other wlan interferences were detected neither by SONOS support nor by scanning the WLAN by myself)

but anyway - i made a full reset of both orbis and set them up as suggested, with ORBI in AP mode --> and its working at the moment .

the only change i made : i ve moved the SONOS bridge from close to the orbi to 1meter away.

lets see how long it is working ( as described this setup was working before....)