Ticket #4455: 4455_2.patch

_source/plugins/wysiwygarea/plugin.js

@@ -329 +329 @@
                                                         mainElement.append( iframe );
                                         };
 
-                                        // The script that is appended to the data being loaded. It
-                                        // enables editing, and makes some
+                                        // The script that launches the bootstrap logic on 'domReady', so the document
+                                        // is fully editable even before the editing iframe is fully loaded (#4455).
                                         var activationScript =
                                                 '<script id="cke_actscrpt" type="text/javascript">' +
-                                                        'window.onload = function()' +
-                                                        '{' +
-                                                                // Call the temporary function for the editing
-                                                                // boostrap.
-                                                                'window.parent.CKEDITOR._["contentDomReady' + editor.name + '"]( window );' +
-                                                        '}' +
+                                                        'window.parent.CKEDITOR._["contentDomReady' + editor.name + '"]( window );' +
                                                 '</script>';
 
                                         // Editing area bootstrap code.