Hi Simon,
You are right there is a bug there, I thought I had fixed it to work but I was wrong. I will add special logic to fix this for the Html feature only. I really hate the modulewrapper because it is such a hack of a solution and it makes it difficult to enforce the security model. I know it comes in handy though so I will fix it for the html feature. Wherever possible though I think people should use the global content feature listed on the bottom of this page instead of modulewrapper.
http://www.mojoportal.com/publishing-the-same-content-on-multiple-pages.aspx
Best,
Joe