When exiting fullscreen with the option in the menu, the game simply goes white, the game continues to play music fine, and the commandline window continues to recognize my cursor entering and exiting the window, which still hides the cursor. The game goes correctly into windowed mode the next launch.
Similarly, when going into fullscreen with the option in the menu, the game simply goes black, and again the music continues to play fine and once I get out of the game by tabbing, I can close it from the taskbar.
Game still closes properly in both cases.
Both screenshots are from going from fullscreen to windowed mode.
OS and computer config: Windows 7 Professional 64-bit Graphics card: GTX 680 2GB CPU: i5-4670k @4.2GHz stable RAM: 32GB Screen resolution: 5760x1080 (with Nvidia Surround) @60Hz.