Ah I think you're mistaken. We're talking about when you open a new tab in Firefox the default landing page has a little grid showing commonly accessed sites as well as an
additional search/address bar which says "Search with google or enter address"
We have the same feelings on this - I also would prefer an explicitly separate search bar and address bar.
Edit: or maybe I'm understanding Ekaros' comment incorrectly? Either way the thing I'm talking about is that there's a combined search/address bar always visible in FF, and when you open a fresh window or tab there's a landing page which has an additional combined search/address bar.