Window management is tough enough without giving the user only one corner that he can drag to change the window’s size. Microsoft Windows lets you drag any window edge on all four sides, in addition to dragging two sides at once from any of the four corners. There are times when dragging a single window side could eliminate two adjustments on the Mac: a window resize followed by a window move. When you’ve used both operating systems, it becomes clear that Mac window resizing is less convenient.
There’s a complaint I’ve heard from Mac users time and time again. Hard to believe something as simple as this has not been fixed up yet! If you are a Mac user and have a gripe, it may very well have made this list.