Fix video modes not restored when hiding OS X app

README.md

@@ -92,6 +92,8 @@ GLFW bundles a number of dependencies in the `deps/` directory.
  - [Cocoa] Bugfix: The primary monitor would get reported as disconnected when
                    entering full screen on a dual-GPU machine with automatic
                    graphics switching
+ - [Cocoa] Bugfix: The original video modes were not restored when the
+                   application was hidden
  - [X11] Bugfix: `glfwInit` would segfault on systems without RandR
  - [X11] Bugfix: The response to `_NET_WM_PING` was sent to the wrong window
  - [X11] Bugfix: Character input via XIM did not work in many cases

src/cocoa_window.m

@@ -287,6 +287,14 @@ static int translateKey(unsigned int key)
     _glfwPlatformPostEmptyEvent();
 }
 
+- (void)applicationDidHide:(NSNotification *)notification
+{
+    int i;
+
+    for (i = 0;  i < _glfw.monitorCount;  i++)
+        _glfwRestoreVideoMode(_glfw.monitors[i]);
+}
+
 @end