None of the citadels jump for me in your savegame. I also think that nicolai is on the spot with his analysis.
@nicolai: in game the soldiers background is indeed black, when I take a screenshot with "Screen capture" which is the Mac delivered program it stays black. If I use CTRL + F11 it turns white in the screenshot, I didn't notice any other color change. This is with opengl enabled. In the software renderer, both mechanism produce the correct screenshot.
None of the citadels jump for me in your savegame. I also think that nicolai is on the spot with his analysis.
@nicolai: in game the soldiers background is indeed black, when I take a screenshot with "Screen capture" which is the Mac delivered program it stays black. If I use CTRL + F11 it turns white in the screenshot, I didn't notice any other color change. This is with opengl enabled. In the software renderer, both mechanism produce the correct screenshot.