Erratic s:List scrolling when itemRenderer contains RichEditableText with width="100%"

Steps to reproduce:
1.Run attached file
2.Scroll down
3.

Actual Results:
erratic scrolling

Expected Results:

Workaround (if any):
width="100%" on ItemRenderer instead of RET works correctly
<s:ItemRenderer width="100%">
<s:RichEditableText id="ret" content="

" />
</s:ItemRenderer>