Bug for active menu

Hello
There is a bug for the active menu.The bug is the main link not being high lighted even though there are active class attached to it , and the option under menu bar for high lighting the active menu is active.

The bug is happen only in some link not on all links.
I did investigate the issue and found out that the menu-current is not being added to the the link when am on it.

The page I need help with: [log in to see the link]