Supress IE11 undefined window.parent.CKEDITOR

#4601 (comment)
ckeditor · Apr 26, 2021 · dcb8b0c · dcb8b0c
1 parent dfb49fc
commit dcb8b0c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/plugins/wysiwygarea/plugin.js b/plugins/wysiwygarea/plugin.js
@@ -520,7 +520,7 @@
 							'var wasLoaded=0;' +	// It must be always set to 0 as it remains as a window property.
 							'function onload(){' +
 								'if(!wasLoaded)' +	// FF3.6 calls onload twice when editor.setData. Stop that.
-									'window.parent.CKEDITOR.tools.callFunction(' + this._.frameLoadedHandler + ',window);' +
+									'window.parent.CKEDITOR && window.parent.CKEDITOR.tools.callFunction(' + this._.frameLoadedHandler + ',window);' +
 								'wasLoaded=1;' +
 							'}' +
 							( CKEDITOR.env.ie ? 'onload();' : 'document.addEventListener("DOMContentLoaded", onload, false );' ) +