Can we disable the drag window to top of screen Mission Control / Spaces feature in El Capitan?
According to the Reddit thread, Is there any way to disable Mission Control coming up when I drag a window to the top of the screen?, the solution is:


  System Preferences > Mission Control
  
  Uncheck "Displays have separate Spaces" then log out and back in again.


It works, I had the same issue &amp; now it's sorted.