Parts not selectable in flight

[Jimbodiah]

I'm having a hard time selecting parts to bring up the GUI. A lot of the times the parts will not turn green or be able to show the GUI. I have the rotate the craft or camera view a lot to get them to work again, sometimes even go to the space center and back to the craft.

[HiTechKerbal]

I have the same problem. This makes the game unplayable at times. Quick save/reload will work for like 2 seconds then the parts will go unselectable again until game restart. It's not all parts, and it's not even the same parts every time. Like right now, I'm about to land and the heat shield isn't selectable/highlighting at all, whereas the last flight I could jettison it no problem.

[sal_vager]

We'll need your logs guys.