I disagree. While in practice, this is often the same website, it is a different protocol and a different port. It just happens to use the same DNS address. You're explicitly giving your browser a FQDN, and it is ignoring it and doing something else.
I hope this feature can be disabled. Google has been ignoring the W3C and has shipped proprietary, insecure features in their chromium engine for a while now, so it wouldn't surprise me if they made it permanent 🤷