Thank you for your post.
I am able to replicate the problem on Windows XP SP3. This does not occur with Mac OS X 10.5.8 or Mac OS X 10.6.3. Therefore, this appears to be only a Windows issue.
I have forwarded your post along with my findings to our Development and Software Quality Assurance (Testing) departments for review and confirmation. When more information becomes available for you, I will let you know.