title: SSRS CSV export - whole tablix ignored, only data from last page is exported
body: <p><strong>The report</strong></p>
  
  <p>The report consists of, in this order: </p>
  
  <ul>
  <li>A header</li>
  <li>A tablix containing the main data. It has one grouping containing the detail group.</li>
  <li>A rectangle set to add a page break before. The rectangle contains text boxes with metadata.</li>
  <li>A footer</li>
  </ul>
  
  <p><strong>The problem</strong></p>
  
  <p>When the report is exported to CSV the only data is the metadata from inside the rectangle. I need the data from the tablix.</p>
  
  <p><strong>Additional details</strong></p>
  
  <ul>
  <li>There are no visibility expressions set on the tablix, it's columns or rows, any individual text boxes, or groupings. </li>
  <li>The report exports to excel (.xlsx) just fine.</li>
  <li>The issue occurs on the report server and in SSDT locally.</li>
  </ul>