Ticket #24756: 24756-3.patch

wp-includes/js/autosave.js

@@ -520 +520 @@
         init: function( settings ) {
                 var self = this;
 
-                // Run only on the Add/Edit Post screens and in browsers that have sessionStorage
-                if ( 'post' != window.pagenow || ! this.checkStorage() )
+                // Check if the browser supports sessionStorage and editor.js is loaded
+                if ( ! this.checkStorage() || typeof switchEditors == 'undefined' )
                         return;
-                // editor.js has to be loaded before autosave.js
-                if ( typeof switchEditors == 'undefined' )
+
+                // Don't run if the post type doesn't supprts neither 'editor' (textarea#content) nor 'excerpt'.
+                if ( ! $('#content').length && ! $('#excerpt').length )
                         return;
 
                 if ( settings )