Index: /FCKeditor/trunk/editor/_source/classes/fckpanel.js
===================================================================
--- /FCKeditor/trunk/editor/_source/classes/fckpanel.js	(revision 1131)
+++ /FCKeditor/trunk/editor/_source/classes/fckpanel.js	(revision 1132)
@@ -169,5 +169,11 @@
 
 		if ( this.ParentPanel )
+		{
 			this.ParentPanel.Lock() ;
+
+			// Due to a bug on FF3, we must ensure that the parent panel will
+			// blur (#1584).
+			FCKPanel_Window_OnBlur( null, this.ParentPanel ) ;
+		}
 
 		// Be sure we'll not have more than one Panel opened at the same time.