Fullscreen screenshots black in b30

dear devvvvs,
in b30, if i take a screenshot of a full-screen renderer, the image is black. the same applies regardless of whether i use ctrl-1 or print screen.
it still works in b27.2 (but not later, at least from the builds that i tested).

Maybe I should bump this age-old thread, since nothing has changed since a few versions…
Is there a solution for this problem? Have I missed something?
I just updated from Win7 to 8.1 and I still have this problem…

Extra Info: I’m using Win 8.1 64-Bit & a NVIDIA Quadro FX 880M with the latest driver installed.

I’m also getting a black window when doing a fullscreen screenshot on Windows 8.1

It does work if I have the renderer as a floating window (alt+1), snap it to the top left corner, make the window as big as possible, remove the window border (ctrl+8), and then printscreen that.