In version 12.3, there was an option to autofill a password in the AWI login screen:
The user logging in could choose from a list of saved passwords in their browser.
With version 21.0, this is no longer an option. There is no popup with the saved passwords:
21.0
This is an intentional security design change
This change in behavior is put into place intentionally for security purposes. With saved passwords in the browser carries a risk that an attacker steals the password. Out of an abundance of caution, the option to autofill passwords has been removed.