Disable opening of new tabs when selecting a newly visited page in the URL field

How do i disable FF for android to open new tabs when i pick a recently visited page when i stand in the address field of an existing tab? If i starts typing an URL it opens in the existing tab, but if i pick a recently opened page, it opens a new tab. Even if i pick the very same site that's already open in a tab, it opens it in a new tab! This behavior is absolutely idiotic! If i want to open a new tab, i open a new tab. If i want to change the content of an existing tab, i go to the address field of that tab and pick whatever page i want to open in that tab! That's how FF on windows works, that's how it should work on android!