I’m having a problem with the Navigation Dropdown but only on the first submenu. When I tap on the top level menu item it pops open the submenu, as expected, but then the submenu disappears in an instant. It’s impossible to select one of the submenu items because they’re all gone before I have a chance.
Oddly, all the other submenus (5 other submenus) behave as expected. I can tap on the top submenu button and the submenu opens up and stays open. I can then choose any submenu item and it goes to the appropriate page.
This problem only occurs with the WP Front Page (Home) submenu. (And only on mobile devices.)
There is another problem with this menu which may or may not be related. The other problem: if I open a submenu but don’t select a submenu item—and then open another submenu, the two submenus are layered on top of one another.
What could be causing this unusual behavior?