Firefox redirects to www, how to disable?

Question

Mozilla

Suddenly, the following suddenly appeared:
I type habra in the address bar ... Firefox automatically adds the hint "habrahabr.ru/". I poke a finger at Enter - and then a surprise: miraculously, the address with www .
Well, habr, of course, automatically redirects back to the domain without www, that is, the browser makes unnecessary requests. But other sites do not redirect - and this is sometimes terribly infuriating . Firefox 14.0.1 (Ubuntu)
How to get rid of this innovation - maybe tweak the settings somewhere? thanks in advance

Answer 1

Try this advice, the default prefix is ​​www.

Answer 2

Inline autocomplete, enabled by default since Firefox 14, does not work correctly . You can turn it off with about:config-settings browser.urlbar.autoFill.