You can click in the area where the button is supposed to be to interact with the window. It doesn't happen 100% of the time, but I don't think it's an exaggeration to say that it's at least 80% (i.e. sometimes the buttons are there, most times they aren't). I'm attaching a variety of screenshots to show that this is not limited to a specific function, as well as my dxdiag info.
DxDiag.txt 34.41KB 2 downloads 2015-11-01_00014.jpg 61.6KB 0 downloads 2015-11-07_00010.jpg 73.91KB 0 downloads 2015-11-07_00021.jpg 63.41KB 0 downloads 2015-11-07_00022.jpg 96.11KB 0 downloads 2015-11-07_00025.jpg 93.86KB 0 downloads 2015-11-07_00026.jpg 93.55KB 0 downloads 2015-11-08_00001.jpg 69.85KB 0 downloads