Two clicks needed for sub-menu entry

To access a page that in in a submenu, I always have to click twice, the first click somehow selects the item in the menu, but only the second opens the page.

I think it has something to do with the mobile-dropdown.min.js which calls e.preventDefault() on the click event that is triggered. I don’t know why this is necessary. But to be clear: this happens on desktop with the fully expanded menu.

You can reproduce the behavior here: http://bcrf.metaodi.ch/, click on any item in the “Verein” submenu.