Why does the AWS Billing page have a CORS issue on it?

If I go to this page in a Safari browser: https://us-east-1.console.aws.amazon.com/billing/home

I get the following error: [Error] Blocked a frame with origin "https://us-east-1.console.aws.amazon.com" from accessing a frame with origin "https://global.console.aws.amazon.com". Protocols, domains, and ports must match.

It sounds like I can fix this if I change a setting in Safari, or if I use a different browser. But I think this issue should be fixed on the AWS side. I believe that AWS should not perform this cross-site request; i.e. it should either change the billing page to use origin "https://global.console.aws.amazon.com", or it should have the API request use origin "https://us-east-1.console.aws.amazon.com"

Thank you for addressing my question.