The following makes Unity have a consistent look and save vertical space.
maximized window
window title on top bar, global menu appears where window title on top bar is on mouse over the window title on top bar
non-maximized window
window title on top of the window, global menu appears where window title on top of the window is on mouse over the window title on top of the window
The following makes Unity have a consistent look and save vertical space.
maximized window
window title on top bar, global menu appears where window title on top bar is on mouse over the window title on top bar
non-maximized window
window title on top of the window, global menu appears where window title on top of the window is on mouse over the window title on top of the window