title: overlapping subreports in pentaho report designer
body: <p>I'm having trouble using multiple sub-reports in pentaho.
  It works fine when the number of records in a sub-report is low (less than 10) but when it has more than 10 records the sub-reports overlap each other so nothing can be read.</p>
  
  <p>and when I increase the height of sub-reports then none of the sub-reports can be visible.
  <img src="https://i.stack.imgur.com/7Pc9q.jpg" alt="enter image description here"></p>