When i right click on the search bar text area, the option "Clear Search History" is disabled in the context menu. I'm %100 sure that i have some search history (not suggestions) but i cant delete them this way. When i try the "clear private data" dialog, it works fine. The problem only occurs in the spanish version of firefox (not a language pack.i installed directly with the spanish installer). English version works just fine. I tried to reinstall, start in secure mode or with administrator privileges but even in the fresh install the option is disabled.

I'm asking in english, cos im not fluent in spanish(that's why im trying to use firefox in spanish btw)