Ticket #18091: 18091.2.patch

wp-admin/js/common.dev.js

@@ -195 +195 @@
 
                 if ( body.hasClass('folded') ) {
                         body.removeClass('folded');
-                        deleteUserSetting('mfold');
+                        setUserSetting('mfold', 'o');
                 } else {
                         body.addClass('folded');
                         setUserSetting('mfold', 'f');