title: fabricjs 1.6.3: why active object is always shown on top
body: <p>good demo of my problem: <a href="http://fabricjs.com/hovering" rel="nofollow">http://fabricjs.com/hovering</a>
  If you select any item, it is displayed on top.
  In earlier versions (1.5.0 - 1.6.2) this problem does not exist.
  Sorry for bad English.</p>