Mobile Menu Open SubMenu Rather Than Option

This may not be an option to fix, but I thought I’d ask the question.

Here is a screenshot of the mobile version of my menu.

As you can see there are many submenus. If I click on the actual arrow then the menu drops down, however, as the main menu item is just a blank custom link it does nothing but return to the current page.

Is there any fix available that means when a user clicks the actual menu item and not the down arrow it still opens up the submenu?

Thanks in advance!