Ticket #47723: 47723.diff

src/wp-includes/nav-menu.php

@@ -488 +488 @@
                 if ( '' == $args['menu-item-title'] && '' == $args['menu-item-description'] ) {
                         $args['menu-item-description'] = ' ';
                 }
+        } else {
+                /* if custom menu item, then:
+                        * trim the original object's URL
+                 */
+
+                $args[ 'menu-item-url' ] = trim( $args[ 'menu-item-url' ] );
         }
 
         // Populate the menu item object