Index: src/wp-includes/nav-menu.php
===================================================================
--- src/wp-includes/nav-menu.php	(revision 36172)
+++ src/wp-includes/nav-menu.php	(working copy)
@@ -739,7 +739,8 @@
 				$menu_item->url = get_permalink( $menu_item->object_id );
 
 				$original_object = get_post( $menu_item->object_id );
-				$original_title = $original_object->post_title;
+				/** This filter is documented in wp-includes/post-template.php */
+				$original_title = apply_filters( 'the_title', $original_object->post_title, $original_object->ID );
 
 				if ( '' === $original_title ) {
 					/* translators: %d: ID of a post */