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And yes, this problem also occurs with A5. A6 probably as well, I cannot test this one



Chances are then that it also occured with A4 and will also occur with A8.

As I can not remember such a problem from anyone else, it could be a specialty of your PC. A DirectX application has no influence on the behavior of desktop windows in fullscreen mode. I also don't think that a video driver could affect this.