I have the latest drivers and I never had any problems with them ^^
I7 3930k, 8GB RAM and AMD R9 390.

The "B" version was used as default.
I will have an eye on it.
I just noticed it, while switching from a game back to the desktop.
I guess WED don't like it, when you switch trough a fullscreen game and WED.

Thanks for the answer!