Ticket #52250: 52250.1.diff

src/wp-admin/includes/export.php

@@ -542 +542 @@
                         foreach ( $posts as $post ) {
                                 setup_postdata( $post );
 
-                                /** This filter is documented in wp-includes/feed.php */
-                                $title = apply_filters( 'the_title_rss', $post->post_title );
+                                /**
+                                 * Filters the post title used for WXR exports.
+                                 *
+                                 * @since 5.7.0
+                                 *
+                                 * @param string $post_title Title of the current post.
+                                 */
+                                $title = wxr_cdata( apply_filters( 'the_title_export', $post->post_title ) );
 
                                 /**
                                  * Filters the post content used for WXR exports.