I recently upgraded my keyboard to a Razer Blackwidow v3 Pro. I have connected it to an iPad Air 5 on iPadOS 16.1 via Bluetooth. It appears to work everywhere else within the OS but not in VO via Bluetooth. It also does not work in wired mode. I also tested my Keychron C2 and it does not work in VO, either. I’m not 100% sure if there is a setting that I am missing, but I did not see anything in the keyboard settings.

Ugh. We'll have to take a look. I don't know if there might have been an API change.

iOS with keyboards has always been kind of a strange and challenging area of development, due to the way Apple approaches it (basically: "keyboards are only for text-entry, not for gameplay"). We may have some historical workarounds that are now conflicting with modern updates.