I see no sub-menu in either Safari, Firefox, Chrome or Opera. It doesn't look like a browser issue to me. The sub-menu has appeared for me in the past. Any idea's of what is wrong?

When searching for beer recipes I like to filter by beer style. Sometimes I can access a sub-style drop down menu, for example -American Ale > American Brown Ale-. But often the second drop down menu never appears. Moreover, sometimes the first drop down menu won't drop down at all. This is...