Why a two step login?

[scott-nc]

Why does the Bitbucket website login page (and sadly, many other technical sites) require two separate form submissions - one for the login email address and a second form submission for the password?  Not talking about 2FA - just the simple, browser login page.

I think it needlessly complicates the login process, especially when using a password manager (1Password in my case), which could be as easy as a single button click.

[Tyler T]

Here is some discussion as to why Google started this pattern:

https://ux.stackexchange.com/a/78810

Some of the reasons Google made this change were:

• Preparation for future authentication solutions that complement passwords
• Reduced confusion among people who have multiple Google accounts
• A better experience for SAML SSO users, such as university students or corporate users that sign in with a different identity provider than Google

It is likely that these same benefits apply to Atlassian.

Note: If you access Bitbucket regularly on the same device you should not see the login page because the autologin cookie will be saved for 30 days.

[scott-nc]

PivotalTracker uses a similar two-step login, but they have a workaround URL that can bypass the email question.  For example:

https://www.pivotaltracker.com/signin?credentials%5Busername%5D=somebody@somewhere.com

One button click in the password manager to login. Does Bitbucket have anything like that?