title: ExtJS 4.2 - Constrained window is not positioned correctly after maximizing and then restoring
body: <p>I have a window inside a panel with <code>constrainHeader:true</code> and <code>maximizable:true</code>.  I'm using ExtJS 4.2.1.883.  When the window is maximized, it expands to fill the panel as expected.  When the window is restored, however, it does not return to it's previous position and is instead positioned slightly higher than expected.</p>
  
  <p>See jsFiddle <a href="http://jsfiddle.net/kE2HB/" rel="nofollow">here</a>.</p>
  
  <p>To reproduce, click the 'add window' button, maximize the window, and then restore it.  I expect that this issue is due to the header and/or toolbar but am not sure how to accommodate for that.</p>