li class in menu not being applied

Hey,

First of all, great theme. I have one small issue that I can't seem to resolve with the menu. When I have a menu with a dropdown and users click on the first item, the class doesn't get changed to "expanded first active-tail" which means that the button color doesn't change. This only happens when visiting the first item on the list, as when you visit any other the first correctly gets colored accordingly.

I don't know if I explained correctly, the site is:
http://www.lawilsonscholarship.com

check the difference when clicking on "how you can help" note that the button stays orange
but when clicking on "corporate sponsors", "donate", or "volunteer" the "how you can help" button get's correctly colored blue

Any ideas?