Ticket #29906: 29906.2.diff

src/wp-includes/js/admin-bar.js

@@ -28 +28 @@
                                         e.stopPropagation();
                                         e.preventDefault();
                                         el.addClass('hover');
+                                } else if ( $(e.target).parent().hasClass('hover') ) {
+                                        // We're dealing with an already-touch-opened menu genericon,
+                                        // close it and prevent propag and defaults. See #29906
+                                        e.stopPropagation();
+                                        e.preventDefault();
+                                        el.removeClass('hover');
                                 }
 
                                 if ( unbind ) {