Firefox prepopulates "Account username" of LDAP settings with normal user credentials
Due to lazyness admin/changeme is saved as credentials for the Foreman in Firefox.
When editing LDAP authentication, Firefox prepopulates the Account username field with "admin" (if the field is empty, as it is when LDAP allows anonymous bind).
Steps to Reproduce:
1. save login credentials in firefox
2. go to Administer → LDAP authentication
3. create a new LDAP or edit an existing one that has an empty account username
account username is set to the stored satellite user by Firefox
account username is empty
Marking the field in LDAP settings as autocomplete="off" might help, but I did not test it. (see https://developer.mozilla.org/en-US/docs/Web/Security/Securing_your_site/Turning_off_form_autocompletion)