title: Can't change cursor position by click in div contenteditable in FF
body: <p>I've been developing a web-ui for a while and it has become now quite complex. At a certain place I use a <code>&lt;div contenteditable="true"&gt;</code> for editing text, and there is a bug in FireFox, which I cannot trace down: </p>
  
  <p>When there is some text in the div, and I click with my mouse to change cursor position, it doesn't work. The cursor is always in the end of the text. It works fine in other browsers, and you can change cursor in FF using arrow keys.</p>
  
  <p>I tested a simple html page with a single element <code>&lt;div contenteditable="true"&gt;</code> in it in FireFox, and it works fine, but doesn't work on my system. Obviously, there is something that blocks it.</p>
  
  <p>What can be a possible issue?</p>
  
  <p>Thanks!</p>