Multiple monitor support is one of the bits of MacOS that most annoys me. Some quick sample problems: * if you have a laptop connected to an external monitor,

Multiple monitor support is one of the bits of MacOS that most annoys me. Some quick sample problems: * if you have a laptop connected to an external monitor, and you disconnect the monitor then all your windows migrate to the laptop display. But they don't migrate back again when you plug the monitor in again, so you're stuck with a lot of manual window rearrangement (or third party utilities to work around it) * the menu bar only appears on one monitor, so if you're dealing with a window on the other monitor there's a huge trek with the mouse to get to the menu. (this is kind of fallout from the fundamental choice that the menu doesn't attach to the window, so I can see why it works the way it does, but it suggests that a UI which worked on the Mac Classic might be being a bit strained in a modern world of multiple large monitors) * new windows/dialog boxes often appear on the "wrong" monitor * fullscreening an app on monitor A removes all the app windows on monitor B So I can see why the parent might be irritated too.