I have now tested that the "additional settings" dropdown is visible on the right hand of the browser window on 1600x1024 and on 640x1024. If the window is narrower that this then the menu starts wrapping. It should be possible to fix this but i do not believe that anyone will ever complain about a screen narrower than 640.

Applied in changeset dfd6c0710159c5f296aed6e1064c34c9540ae7d9.