Possibly the most annoying UI trend of the last few years is websites changing from

[username] - [ password ] -> Login

to

[username] -> Next -> [ password ] -> Login

@pdwerryhouse I think, although I am not sure, that this separation of username and password onto two screens is driven by heavy adoption of third-party authentication. Before they can ask for your password, they need to find out if you're actually going to be signing in via OAuth or something else instead.

(Well, that's one reason at least. I'm pretty sure banks started doing this about 10 years ago just to be ornery.)

@varx @pdwerryhouse as somone who has had to implement something like this, yes, it's because of SSO. We can't tell what type of authentication needs to be done until the user enters the domain of their email address. I did work on one implementation where we showed the password field by default but hid it with javascript as soon as we detected a non-sso domain, but that has security and usability implications to it as well. 🤷‍♂️