@waldemar
The secirity settings may vary from browser to browser.

@cecilia
The web session is bound to the web protocol, so you have to login to the http site too. The secirity settings of your browser may preventing ypu to submit passwords to http sites, but there should be a way to bypass this. (I don't want to generate panic, but of course there is a reason if browsers behave this way, so make it at your own risk)