Special tag issue with MediaWiki+FCKeditor

I've been searching all over the internet and haven't seen this issue mentioned anywhere before.

I have a fresh install of MediaWiki 1.14 and the lastest MediaWiki+FCKeditor as of the time of this writing. When I use a special tag in a post and switch to WikiText view the tag looks correct. But when I switch back to WYSIWYG view or save the page the specific tag gets lost.

For example:

<section>asdf</section>

Becomes:

<>asdf</>

I've been digging through the code looking for the source of the problem but I've been coming up empty. Does anyone have any ideas on what's wrong or where to start looking? I had to patch the code to work with 1.14 but otherwise it's unchanged and everything else seems to work fine. I suspect that since this is an issue when I simply switch to and from WikiText view without saving that the issue is somewhere in the plugin.

The oddest part is that version running on the sandbox of the MediaWiki+FCKeditor web site seems to work fine. I have the latest version from the subversion server though it looks like the last update was somewhere around 9/2008.