Firefox new tab has a box in the middle of the page for you to click in and enter text to search in your default search engine - and it immediately starts typing in the URL bar. IF I WANTED TO USE THE URL BAR I WOULD CLICK THERE.
Throws me off every time.
Well … the box is just a remenant of the search web pages.
I think it does make sense to have a separate search box for web-only searches tough. Say you’re sitting next to a coworker and you’re talking about Anna Karenina and you want to look something up, but typing “an…” in the address bar will pull up “Anastasia likes it big and hard” from your bookmarks because you forgot to disable bookmark search