Demo is easy made but if you want it i can upload it for you.
Steps to reproduce: 1. Click the Button to create an Exception 2. Wait some seconds until the little Window changes 3. move the Window to somewhere else 4. click on to the doubled window
in my big app the border appears without doing anything but dont know why Download Demo
Ok, thanks. You must play with Freezing options in the MadExcept I think. Application is frozen and can't process messages like WM_NCPAINT and borders are changed by system borders.