Thank you for your post.
There were several display problems with early versions of FileMaker Pro 11, and most of them have been fixed by FileMaker Pro 11.0v4, but it appears you a encountering a similar issue. Do you have any accelerator or graphic card with an accelerator? If so, try turning down the accelerator to see if there is a difference. Regardless, our Testing department would like to see your database file so they can determine why this is occurring. Check your Inbox at the top of this page for instructions where to send the file.