New weird password manager behaviour

Jared Wein jaws at
Thu Dec 22 15:35:59 UTC 2016

This is indeed intentional behavior, but that is not to say that it can't
be tweaked to make it more intuitive.

There are a few motivations behind this feature:
- Some websites separate the username and password on different pages now.
Because they are on separate pages, we need some way to tie what password
should be entered in on the second page.
- On password reset pages, there are often not any login fields, so we
still want a way to choose which password should be placed in the "original
password" field.
- On webpages that have both a username and password, the password field
often comes after the username. The autocomplete dropdown only shows up
when the field is empty, so most users will not see it unless they try to
enter in their password first. This is also why we don't autofill the
username portion in this case, because if someone is going backwards
(password first, then username), there is a high chance that the user may
want to share a password between accounts.

I hope that helps explain more of the background. If you have any ideas on
how we could make the password-related dropdown more intuitive please share.


On Thu, Dec 22, 2016 at 6:03 AM, Gervase Markham <gerv at> wrote:

> I can't find any bugs on this, and the behaviour is in both Nightly and
> Aurora, so it must be intentional...
> Why, very often, when Mozilla is auto-filling a username and password,
> does it now automatically drop-down a list of _usernames_ from the
> _password_ field? This is very confusing, because the contents don't
> match the field it drops from, and clicking one of them doesn't populate
> the password field with the text you clicked.
> If I wanted the password for a different username, I would edit the
> username field. If you want to make that particularly easy, you could
> make the dropdown come down from the username field. But why from the
> password field?
> I get massive cognitive dissonance every time this happens, and it feels
> like a bug - the dropdown is attached to the wrong field. It is also
> annoying because the dropdown often covers the "Submit" button on the
> form, which is often directly below the password field. Lastly, the
> dropdown appears to have focus so I have to dismiss the dropdown by
> clicking outside it before I can actually log in. Given that the idea of
> a password manager is to save clicks, it's now doubled my click count
> for these forms.
> The only way to stop this evil seems to be not to have multiple logins
> for the site - and surely one of the advantages of a password manager is
> that it should be able to cope well with multiple logins, not discourage
> people from having them.
> It's hard to take a screenshot of because pressing the screenshot button
> dismisses the dropdown!
> Confused,
> Gerv
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