Hi,
I have the same problem with Language Detection in WordPress 4.0 with mqtranslate 2.7.1.1. Default language is english, browser language is german. With IE 11 the correct language (german) is displayed. With Firefox ESR 31.2.0 I get the default language.
When I delete the cookie mentioned above, I get the correct language in Firefox, too. But the cookie is created again and next time I get the default language again.
Any news on this topic?
Thanks.
