FRAME_TOOLBAR_HEIGHT (f) =
NSHeight ([window frameRectForContentRect: NSMakeRect (0, 0, 0, 0)])
- FRAME_NS_TITLEBAR_HEIGHT (f);
+ if (FRAME_TOOLBAR_HEIGHT (f) < 0) // happens if frame is fullscreen.
+ FRAME_TOOLBAR_HEIGHT (f) = 0;
unblock_input ();
}