if you use this website on mobile:
you will see that the menu called
Medizinisch orientierte Kosmetik will not scroll through all items. The list ends at the bottom of the screen. When I try to scroll the menu, I will actually scroll the content behind the menu. Only when the items behind the menu are scrolled through to the end, can I scroll the menu items as well.
What can I do so that the menu will scroll through all items and not the content behind the menu?