what you’re describing doesn’t sound llike a bug to me.
i would turn off website restrictions temporarily just to see if everything works in that state. likely you’re just restricting too much stuff. for example, you noted you allow access to Google Maps, which i assume means maps.google.com, but you probably also need to allow maps.googleapis.com.
if in doubt, you can use the network activity monitor in your browser’s developer tools to see exactly which requests are failing, and that should tell you exactly which domains or subdomains you need to allow.