title: ExtJS Column Chart Label Using display: 'outside' Not Working
body: <p>With ExtJS (4.2), I'm trying to simply display a label outside on top of each column in a column chart.  This is a small snip of what I have:</p>
  
  <pre><code>label: {
      field: 'value',
      display: 'outside',
      orientation: 'horizontal',
      font: 'bold 12px Arial'
  }
  </code></pre>
  
  <p>In this case, no labels are shown at all anywhere on the chart on any of the columns.</p>
  
  <p>However, if I change the display value to 'insideEnd', all the labels display fine inside the top of each column.  If I change the display value to 'insideStart', all the labels display fine inside the bottom of each column.  It just seems to not work as soon as I set it to 'outside'.</p>
  
  <p>I've tried narrowing down the problem by adding a custom renderer function to the above code, and noticed that that function isn't even run when display is set to 'outside', however it does run if I change display to 'insideEnd' or 'insideStart'.  It's almost like as soon as it sees 'outside', it just skips over the renderer and does nothing.</p>
  
  <p>I'm stumped.  Any ideas as to what might be causing this?</p>
  
  <p><strong>Edit (SOLVED):</strong>
  The reason is I had the column chart series's stacked set to true.</p>
  
  <pre><code>stacked: true
  </code></pre>
  
  <p>I guess outside won't work with stacked column charts.</p>