Yes! That's the problem! After reading through the thread I changed my
code to set cacheAsBitmap=false on the instance of the PopUpWindow
rather than in the MXML component definition. In other words, this:

var crRTEW:ContentRowRTEWindow =
ContentRowRTEWindow(PopUpManager.createPopUp(this, ContentRowRTEWindow));
crRTEW.cacheAsBitmap = false;

And NOT this:

<mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml";
xmlns:v="views.*" cacheAsBitmap=false ... >

Problem solved!

Thank you very much for finding that thread!!!

Paul

--- In [email protected], "Doug Lowder" <[EMAIL PROTECTED]> wrote:
>
> Is the issue you're seeing the same as in this thread?
> 
> http://tech.groups.yahoo.com/group/flexcoders/message/46996
> 
> Maybe there are some tips in the various responses that can help.
> 
> 
> --- In [email protected], "Paul Whitelock" <news@> wrote:
> >
> > Hi Doug,
> > 
> > Thanks for the suggestion. I added a cacheAsBitmap=false attribute 
> on
> > the <mx:TitleWindow> tag and on the <mx:DataGrid> tag but it didn't
> > seem to make a difference.
> > 
> > Paul
> > 
> > --- In [email protected], "Doug Lowder" <douglowder@> 
> wrote:
> > >
> > > Hi Paul,
> > > 
> > > I recall seeing some similar strangeness with datagrids in title 
> > > windows.  Try setting the cacheAsBitmap property to false on the 
> > > titlewindow and/or datagrid and see if that helps.
> > > 
> > > --- In [email protected], "Paul Whitelock" <news@> 
> wrote:
> > > >
> > > > I've got a basic DataGrid inside a VBox which is inside of a
> > > > TitleWindow. Sometimes during vertical scrolling the white 
> > > background
> > > > will be drawn *above* the top of the DataGrid component. It's 
> a 
> > > solid
> > > > white filled rectangle about 50 pixels high with a width that 
> > > matches
> > > > the DataGrid's width. The TitleWindow's title is drawn on top 
> of 
> > > the
> > > > white rectangle (probably due to z-depth order). It's almost 
> like a
> > > > clipping rectangle is removed allowing the DataGrid to draw its
> > > > background outside of the its display area.
> > > > 
> > > > Again, it doesn't occur all the time, just at certain scroll
> > > > positions. The DataGrid has an itemRenderer, but it's just a 
> simple
> > > > <mx:Text> component, so that shouldn't have anything to do 
> with it.
> > > > 
> > > > Anyone know what's going on and how to prevent the DataGrid 
> from
> > > > sticking a white rectangle up at some scroll positions? Thanks!
> > > > 
> > > > Paul
> > > > 
> > > > ---
> > > > Paul Whitelock
> > > > Denver, Colorado
> > > >
> > >
> >
>


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