I would try to figure out if anybody is really setting
variableRowHeight=false instead of trying to force it to be true.
Make sure your renderers aren't somehow misbehaving as they get recycled.
I am still very much a beginner when it comes to Flex. Could you explain what you mean when you say, "Make sure your renderers aren't somehow misbehaving as they get recycled"?
See the item renderer posts on my blog. Especially the oldest one.
Thanks for the information. Your blog post cleared up a bunch of confusion for me.