Bug Report: Sub menus don't toggle on mobile unless "sticky" is chosen

Just implementing some sub menus on an Enfold based site and noticed that the menu doesn’t toggle when viewing on mobile UNLESS “Sticky submenu” is ticked.

Digging into the javascript code, this function below causes the menu to toggle. There is no other mention of toggling the sub menu in the javascript code that I can see

		$(".av-sticky-submenu").each(function()
		{	
			 var menu  = $(this), placeholder = menu.next('.sticky_placeholder'), mobile_button = menu.find('.mobile_menu_toggle');
			 win.on( 'scroll',  function(){ window.requestAnimationFrame( $.proxy( check, menu, placeholder) )} );
			 
			 if(mobile_button.length)
			 {
			 	mobile_button.on( 'click',  toggle );
			 }
			 
			 
		});