Custom menu problem

Dear forum,
Please have a look at https://www.bc-geldrop.nl
For this site I made a custom menu, with Route as a sub to the Contact menu item.
But as soon as I add the HOME to the menu, Route moves ‘out’ of Contact and is unclickable.
When I go and check in the Menu settings, I notice that Route has changed from type ‘Page’ to type ‘Custom’.

Here’s a screenshot of the buggy menu.

I hope my explanation makes any sense. If desired, I can make a video.

Thanks for any help,
Rob