Personally, I wouldn't really mind so much for the menus, but I DO for the cinematics.
I have not found any way to make the menus or cinematics play fullscreen. At the main menu, however, or whevever a cinematic plays or I open the pause (ESC) menu, the game behaves exactly as you describe - the menu/cutscene is in a small window, cannot go to true fullscreen and stays in the upper left corner with the rest of the window black when I maximize the window. after selecting New Game and watching/skipping the opening cinematic). Are you talking about actual gameplay or the main menu and cinematics? With the resolution set to 1600x900 in Setup -> Display, it goes to fullscreen once I actually start playing the game (i.e.
