The sign in form is loaded using AJAX. That is why Firefox do not autocomplete your username and password (if available) in this form.

The problem is that most browsers attach an event to those forms on page load. So when loading an AJAX form you do not fire the page load event and no drop down menus, suggestions or autocomplete does not work.

The solution is to load the from as a hidden element with the main HTML source. Later you can just show that form. This way the autocomplete will work proper.

this is fixed in next version FWIW

It has been adressed in 3.3. If you want it fixed on your current version... There are files in the marketplace that disable the AJAX login and use the traditional login page.

Thanks will wait for the next stable version :)

How do I load just the traditional page?

Post in the support area for help, this is only for feedback ;)