Ticket #24767: 24767.3.diff

src/wp-content/themes/twentythirteen/style.css

@@ -2895 +2895 @@
                 color: #141412;
         }
 
-        .toggled-on .nav-menu li a:hover,
-        .toggled-on .nav-menu ul a:hover {
+        .toggled-on .nav-menu > li a:hover,
+        .toggled-on .nav-menu > ul a:hover {
                 background-color: #db572f;
                 color: #fff;
         }

src/wp-content/themes/twentytwelve/js/navigation.js

@@ -40 +40 @@
         $( '.main-navigation' ).find( 'a' ).on( 'focus.twentytwelve blur.twentytwelve', function() {
                 $( this ).parents( '.menu-item, .page_item' ).toggleClass( 'focus' );
         } );
+
+  if ( 'ontouchstart' in window ) {
+    $( '.menu-item-has-children > a' ).on( 'touchstart.twentytwelve', function( e ) {
+      var el = $( this ).parent( 'li' );
+
+      if ( ! el.hasClass( 'focus' ) ) {
+        e.preventDefault();
+        el.toggleClass( 'focus' );
+        el.siblings( '.focus').removeClass( 'focus' );
+      }
+    } );
+  }
 } )( jQuery );