flex4.7

In a Flex 4 web application I am trying to use a spark.components.List for a chat (for various reasons - it works well for me in a Flex mobile app already), but because I use an item renderer which can be multilined (i.e. wraps too long lines) I have the problem, that I can not scroll the list to its bottom by calling its ensureIndexIsVisible method: I have prepared a very simple test. These are just 2 files, which will work instantly, when you put them into a new Flex project in Flash Builder - MyApp.mxml: <?xml version="1.0" encoding="utf-8"?> <s:Application xmlns:fx="http://ns.adobe.com