Navbar dropdown on iPad

In the navbar, open one dropdown.
After open another, without closing the first.
This will cause the 'dropdown-menu' to be cut off as you can see here:
http://imgur.com/mqmA0IF,czqJ9SY#0
http://imgur.com/mqmA0IF,czqJ9SY#1

This doesn't happend if you move focus down.