@Wade This component isn't really designed to be resized, though it does wrap on resize. Did you set the wordwrap to true?
@Armagosh I can't know where the line breaks will occur ahead of time. It depends on screen resolution and the Flex algorithm for wordwrapping. I am also not clear if this will help. If I put two spaces after the comma, would that prevent the comma from being after the line break?
It renders any one of a number of different xhtml items, some of which will wind up having the ',' be at exactly the end of the line in some resolutions. The same problem happens with hyphens.
Addendum: So essentially, yes, I need the wrapping to flow with window size.