Index: src/wp-includes/class-wp-walker.php
===================================================================
--- src/wp-includes/class-wp-walker.php	(revision 28187)
+++ src/wp-includes/class-wp-walker.php	(working copy)
@@ -246,7 +246,15 @@
 			foreach ( $children_elements as $orphans )
 				foreach( $orphans as $op )
 					$this->display_element( $op, $empty_array, 1, 0, $args, $output );
-		 }
+		}elseif ( count( $children_elements ) > 0 ) {
+			foreach ( explode( ',', $args[0]['exclude'] ) as $orphans ) {
+				if( isset( $children_elements[ $orphans ] ) ) {
+					foreach( $children_elements[ $orphans ] as $op ) {
+						$this->display_element( $op, $empty_array, 1, 0, $args, $output );
+					}
+				}
+			}
+		}
 
 		 return $output;
 	}