ItemRenderer Bug?

Question

I have been struggling with this issue for about 2 weeks. I
was able to reproduce it in a small example. I add and remove an
itemRenderer to a datagrid column at run-time. This only won't
cause the RTE but I also set the datagrids dataProvider again which
causes the error. You will need the Flash Player Debug version to
actually see the error. You can view the example application
here. I
have also include the source with this post.
--- App.mxml ---
<?xml version="1.0"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
creationComplete="initApp()">
<mx:Script>
<![CDATA[
import mx.collections.*;
public var renderer:ClassFactory;
public function initApp():void
loadData(10);
public function loadData(rows:uint):void
var gridData:ArrayCollection = new ArrayCollection();
for( var x:int = 0; x < rows; x++)
var vo:Object = new Object();
vo.fname = "John" ;
vo.lname = "Doe";
vo.job = "Programmer";
gridData.addItem(vo);
dg.dataProvider = gridData;
public function withRenderer():void
renderer = new ClassFactory(LinkRenderer);
fname.itemRenderer = renderer;
loadData(50);
public function withOutRenderer():void
fname.itemRenderer = null;
loadData(100);
]]>
</mx:Script>
<mx:TextArea text="To reproduce bug click 'With Item
Renderer' and then scroll datagrid!" width="300"/>
<mx:HBox>
<mx:Button id="wBtn" click="withRenderer()" label="With
Item Renderer"/>
<mx:Button id="woBtn" click="withOutRenderer()"
label="WithOut Item Renderer"/>
</mx:HBox>
<mx:DataGrid id="dg" width="300" height="400">
<mx:columns>
<mx:DataGridColumn id="fname" dataField="fname"
headerText="Firstname" />
<mx:DataGridColumn id="lname" dataField="lname"
headerText="Lastname" />
<mx:DataGridColumn id="job" dataField="job"
headerText="Job Description" />
</mx:columns>
</mx:DataGrid>
</mx:Application>
--- LinkRenderer.mxml --
<?xml version="1.0" encoding="utf-8"?>
<mx:HBox xmlns:mx="
http://www.adobe.com/2006/mxml"
width="100%" height="100%" horizontalAlign="left">
<mx:Script>
<![CDATA[
]]>
</mx:Script>
<mx:LinkButton id="linkBtn" label="John"/>
</mx:HBox>

Answer 1

I have not gotten any feedback on this issue. I did submit
the bug to Adobe and I just blogged it
gurufaction.blogspot.com
. I thought I had a workaround but the problem is back. I hope I
can resolve this soon.