If I open ksp and let it start in the background, i.e. with another window or two on top of it, the ksp screen is black when I switch to it. The menu is there, I can usually find it, but it a problem. I end up having to shut the game down and restart it with the game topmost.
ksp version 1.7.0.2483 Game window set to 1600 x 1024
Nvidia gtx 970 w/ 4gb onboard. Bios 84.04.36.00.70,
Quad i7-2600 @ 3.4ghz
2 ViewSonic VX223 @ 1680 x 1050, 60hz.
24gb system ram 6tb total hard drive space.
Maybe a bug? I don't know. Easy to repro.
-jimc