Sorry to hear that. This is not likely something the dev will ever be able to reproduce or fix for you. A program's window turning white is almost always a problem with the computer it is being run on. There are a ton of different reasons that could cause it such as the program hanging and/or crashing or a problem with your registry or even malware. I have even seen cases where there are compatibility issues where one program being installed on the computer for some reason causes another program to not work correctly.
This issue would be very difficult to troubleshoot remotely so you might try starting with posting your system hardware specs, check your windows event viewer for errors, and maybe try uninstalling the wallet then run a registry repair/cleaner program and then reinstall the wallet.
Hope you get it figured out, good luck.
Damn, Ok I will take some time off mining and do some work on the computer! Ty!!!
You're welcome. Let me know if you find any useful information when troubleshooting or if you need any help on how to check the event viewer log or run registry repair. GL.