[ljoshua]

Oy, me too, and though I love Twilio they are an offender here! What is the point of this pattern? Something to do with SSO validation or something?

[philnash]

It is to do with SSO. I will pass off to my Twilio colleague Kelley to answer this with a post she wrote last year: https://www.twilio.com/blog/why-username-and-password-on-two...

The nice thing about using autocomplete with username and current-password is that it can help your password manager auto fill these fields across pages if they are implemented like this.