Index: editor/_source/classes/fckpanel.js
===================================================================
--- editor/_source/classes/fckpanel.js	(revision 1299)
+++ editor/_source/classes/fckpanel.js	(working copy)
@@ -186,6 +186,14 @@
 			FCKPanel_Window_OnBlur( null, this.ParentPanel ) ;
 		}
 
+		// Kludge to #191: toggle the iframe scrolling attribute to prevent the panel scrollbars from disappearing.
+		if ( FCKBrowserInfo.IsGecko )
+		{
+			var me = this ;
+			this._IFrame.scrolling = '' ;
+			setTimeout( function(){ me._IFrame.scrolling = 'no'; }, 1 ) ;
+		}
+
 		// Be sure we'll not have more than one Panel opened at the same time.
 		if ( FCKPanel._OpenedPanel )
 			FCKPanel._OpenedPanel.Hide() ;