Index: /CKEditor/trunk/_source/plugins/dialog/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/dialog/plugin.js	(revision 7236)
+++ /CKEditor/trunk/_source/plugins/dialog/plugin.js	(revision 7237)
@@ -2934,5 +2934,9 @@
 		exec : function( editor )
 		{
-			editor.openDialog( this.dialogName );
+			// Special treatment for Opera. (#8031)
+			CKEDITOR.tools.setTimeout( function()
+			   {
+					editor.openDialog( this.dialogName );
+			   }, 0, this );
 		},