Advanced Search link dropping below the navbar

[edgeless]

I'm using v4.2.0. Some experimenting has revealed that the Advanced Search link falls below the navigation bar onto the forum background when stepping below a 100% screen size setting in both Firefox and Chrome. However, the Advanced Search link remains within the navbar at every screen magnification when testing on Internet Explorer. The issue is repeatable on at least versions 19.0 and 12.0 of Firefox, and version 26.0 of Chrome. The installation of IE that I tested on, and which does not demonstrate the issue, is version 9.0.

Does anyone know if there is some CSS trick I can use to correct this matter? Perhaps by adding an overflow-y:hidden; directive somewhere?

Thanks

Edit: This issue is apparently exclusive to version 4 (based upon my checks of various forums running different vB versions). For example, it happens on v4.1.12 as well, but not on v3.8.7, and not on v5.