Ticket #46671: 46671.4.diff

src/wp-admin/revision.php

@@ -60 +60 @@
 
                 check_admin_referer( "restore-post_{$revision->ID}" );
 
+                /*
+                 * Ensure the global $post remains the same after the revision is restored.
+                 * Because wp_insert_post() and wp_transition_post_status() are called
+                 * during the process, plugins can unexpectedly modify $post.
+                 */
+                $backup_global_post = clone $post;
+
                 wp_restore_post_revision( $revision->ID );
 
+                // Restore the global $post as it was before.
+                $post = $backup_global_post;
+
                 $redirect = add_query_arg(
                         array(
                                 'message'  => 5,