Chromecast not communicating with Max BR1 Pro 5g with verson 8.3.0 firmware

I was using a chromecast with my BR1 5G with 8.2.1 without issue. When I upgraded my BR1 to 8.3 I can no longer cast to the chromecast. The IP scheme (192.168.50.xx), VLan, SSID, and outbound rules are exactly the same as before. What happens is I search for the chromecast. It is found by my phone it attempts to add the SSID to the chromecast which is successful. I can see the Chromecast connected when I look at SSID clients. However, the Chromecast is not added to my home on the Google Home app. Therefore i cannot cast to it. The odd thing is my Soho router with the 8.3.0 works just fine with the Chromecast, and if I rev the BR1 back to 8.2.1 it connects up, adds to my home in the app and i can cast to it. This seems somehow to be tied to something in the BR1 that may have changed with the new firmware. I have tried several times including factory resetting the BR1 and building the simplest config possible. Anyone else experienced this?