Masking a 'password' type input makes the field appear prepopulated

[SladeRun14]

Applying a mask to a password type input field confuses the user

Use case:

We're trying to apply a mask to field that accepts a PIN number. The PIN number should be hidden from onlookers as the user types, so we use a password type input field. We want to limit the user to entering exactly 6 digit and only digits. The mask is perfect for this (paired with a validation).

• [x] Bug
• [ ] Feature request
• [ ] Code refactor
• [ ] Continuous Integration (CI) improvement
• [ ] Changes in documentation (docs)
• [ ] Other (describe)

What is the current behavior?

Applying a mask to a password type input field initially displays the field populated dots. These dots erroneously indicate to the user that something has been entered in the field.

What is the expected behavior?

A password type input field should initially display the underscores representing each digit in the mask.

[renato-bohler]

It is beyond us to change how the input type password displays the inputted characters on the navigator.

The desired use case will be feasible though, when #55 is done (and using input type text).