Submenu not clickable

Hi,

I can't click on a submenu item. When I hover over the main menu item the submenu is fading out correctly... but when I move my mouse to the submenu direction this submenu is immediatly closing. So I have no chance to click that submenu item.

Steps to reproduce:

http://www.sg-apfeltrach.de
> menu item "Rundenwettkampf"
> hover over menu item "2014-2015 D-Klasse Süd"
and then try to select "Ergebnisse und Tabelle" for example

Thanks

...ok, small update here:

This error occures only if no menu animation is set in the template config (menu section).
When I set the height animation (or both height and width animation) everything is ok!