Sub-Menu's not initializing correctly

I have 3 menu’s on my main homepage, Cardinals, Kids – Sports, Vacation (using Pinboard theme)

The first time, I click on either Kids – Sports or Vacation, only 6 sub-menus appear. But if I click on Cardinals menu, then come back to either the other two, the full sub-menu displays. It’s almost like an initialization issue.

Thanks for the theme, I do like it overall