Attach (recommended) or Link to PDF file here:
issue13500 (in test corpus)

This regressed when landing #13566. 

What is the expected behavior? (add screenshot)
<img width="664" alt="image" src="https://user-images.githubusercontent.com/942640/122467522-7bc8aa80-cf6f-11eb-9d4d-311eb7c64fb2.png">


What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/942640/122467565-85eaa900-cf6f-11eb-9c10-8a8686ed440c.png)


$appendChild,
  $childrenToHTML,
  $clean,
  $cleanPage,
  $content,
  $extra,
  $finalize,
  $flushHTML,
  $getAvailableSpace,
  $getChildren,
  $getContainedChildren,
  $getNextPage,
  $getParent,
  $getSubformParent,
  $getTemplateRoot,
  $globalData,
  $hasItem,
  $hasSettableValue,
  $ids,
  $isCDATAXml,
  $isSplittable,
  $isTransparent,
  $isUsable,
  $namespaceId,
  $nodeName,
  $onChild,
  $onText,
  $removeChild,
  $searchNode,
  $setSetAttributes,