One Page Current menu item not working correct

Hi,

I’m having problems with the current-menu-items, they aren’t showing the item that is linked to the color sections that is showing. For instance when i’m looking at tickets the current-menu-item is showing ‘nieuws’ which is the next item. Next to that it sometimes keep switching between home and the other items while scrolling.

I’ve already looked through most of the topics posted on this forum put i couldn’t find the solution.