I have the xh9505 and it recently updated to android 10. Ever since then the WiFi won't connect to my WiFi mesh. And it looks to be related to 802.11r - fast roaming, being enabled on mesh networks. I'm not the only one who has had this issue:

https://support.google.com/androidtv/thread/246199346/tv-cannot-connect-to-wifi-after-android-os-10-...

Unfortunately I don't have the option to disable fast roaming on my network and I don't really want to as it's a standard and very useful feature. Can Sony look to fix this please