Additionally, it is easily to screw up big with mouse accidents, whether on explorer or dialog boxes. It's so easy to grab the filename of something else while saving, even when most of the time, that is not what you want to do. And I've also experienced accidentally moving files and folders just because of a slip of the mouse.
While, not on Windows alone, and I doubt this will change, I also think that close and maximize buttons on the corner of windows are too close that I had accidentally closed web browser windows many times. Of course we can just use shortcut keys, but I don't think that fixes root of the problem, and I am also now immunized on how window border buttons look that it might look aesthetically unpleasing if we depart from how it is now.
Many other software also suffer from this design quirks where buttons with very opposing outcomes are somewhat too close to each other, that you need to slow down and be careful.
