title: Group should scroll vertically but is expanding to infinite in width
body: <p>I have a group for which I want to enable horizontal scrolling. Vertically the group should be as wide as possible (100%).</p>
  
  <pre><code>&lt;s:Scroller left="0" right="0" top="0" bottom="0"
          visible="{isVisible}"
          horizontalScrollPolicy="off"
          includeIn="stateA"&gt;
      &lt;comps:MyComp 
              horizontalScrollPosition="0" verticalScrollPosition="0"/&gt;
  &lt;/s:Scroller&gt;
  </code></pre>
  
  <p>Now in MyComp are two other components having also a width of 100%.</p>
  
  <p>Now if I start the application the MyComp-component is about 200px wide and starts to expand its width to infinity. This is like some transition or animation and I don't know how to stop it.
  Setting something like <code>maxWidth</code> would solve the issue, but I don't want to set explicit values.</p>
  
  <p>Any ideas what's wrong?</p>