1Password changed my private key upon import

I feel like I have to be doing something wrong as this is the most basic of use cases, literally just trying to read a key I've just uploaded. It's an RSA 4096 key w/ public exponent of 65537. It's listed in the UI w/ a "key type" value of "RSA, 4096-bit", but the actual key saved is something else and once uploaded, cannot be re-exported. I'm struggling to understand how you can https://developer.1password.com/docs/ssh/manage-keys/#supported-ssh-key-types. It's mind blowing and honestly kind of scary that this issue has been outstanding for over a year.