[TYPO3] timtab weblog: web links problem

[Bing Du]

Hi,

Typo3 4.0.4
TIMTAB Weblog 0.5.11
tt_news 2.4.0

The blog post has a web link.  The link appears fine on the back end.  But
on the web, it doesn't show up as a clickable link.  Anybody who use the
timtab weblog extension know why?  All regular news articles show web
links correctly.

Thanks in advance,

Bing