Update menu.js

Author: Jeroen Alewijns

lib/web/mage/menu.js

@@ -372,7 +372,7 @@ define([
         _toggleDesktopMode: function () {
             var categoryParent, html;
 
-            $(this.element).off('click mouseenter mouseleave');
+            $(this.element).off('click mousedown mouseenter mouseleave');
             this._on({
                 /**
                  * Prevent focus from sticking to links inside menu after clicking