Index: src/wp-content/themes/twentyseventeen/assets/js/navigation.js
===================================================================
--- src/wp-content/themes/twentyseventeen/assets/js/navigation.js	(revision 39199)
+++ src/wp-content/themes/twentyseventeen/assets/js/navigation.js	(working copy)
@@ -27,7 +27,7 @@
 		container.find( '.current-menu-ancestor > .sub-menu' ).addClass( 'toggled-on' );
 
 		// Add menu items with submenus to aria-haspopup="true".
-		container.find( '.menu-item-has-children, .page_item_has_children' ).attr( 'aria-haspopup', 'true' );
+		container.find( '.menu-item-has-children > a, .page_item_has_children > a' ).attr( 'aria-haspopup', 'true' );
 
 		container.find( '.dropdown-toggle' ).click( function( e ) {
 			var _this            = $( this ),