Permalink BUG in IE7

Hi

I just found some kind of Bug in all Blogs(7) running on my Server.
If you go to the “write page” panel with IE7 and name the page e.g. “test page” all works. Publish that page and go back to edit it. The Permalink for the site will appear unter the title:

http://www.domain.com/test-page

If you copy that link and paste it into you adress-bar or a new tab or whatever, the link will look like this:

http://www.domain.com/test-pagetest-page

i can’t figure out why it behaves like this.
It happens only in IE7 for me. (I’m not an IE user, but my clients are)

Is this a known issue? Or allready fixed?

Sumit