Hi Mikey,
This cannot be reproduced on any of our working and testing machines, on any supported operating system. Unless you can provide a repeatable pattern to reproduce this problem, it is a machine-specific issue. Try on another machine, or on a clean Windows installation with the cleanest possible software configuration—especially, without any utility software provided by your hardware vendor. These issues can be caused by utility software, such as virus protection and file management applications, running as background processes. Outdated or wrong video drivers can also do quite strange things. Sorry for not being able to offer more useful help, but I cannot help with machine-specific issues that I can't reproduce.