title: sub report doesn't display when overflow
body: <p>Some times give error like:</p>
  
  <pre><code>net.sf.jasperreports.engine.JRRuntimeException: Subreport overflowed on a band that does not support overflow.
  </code></pre>
  
  <p>What are necessary changes require on sub report to minimize the same?</p>
  
  <p>Also some times it doesn't display subreport when data overflowed, but display rest of data in <code>iReport</code>. </p>
  
  <p>property set as below:</p>
  
  <p>sub report property:</p>
  
  <pre><code>Print when detail overflow : true
  position: float
  stretch type :relative to tallest obj
  </code></pre>
  
  <p>textfields in sub report:</p>
  
  <pre><code>stretch with overflow : true
  Print when detail overflow : true
  position: float
  stretch type :relative to tallest obj
  </code></pre>
  
  <p>Please suggest something..</p>