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)


constructor(attributes) {
    super(TEMPLATE_NS_ID, "para",  true);
    this.hAlign = getStringOption(attributes.hAlign, [
      "left",
      "center",
      "justify",
      "justifyAll",
      "radix",
      "right",
    ]);
    this.id = attributes.id || "";
    this.lineHeight = attributes.lineHeight
      ? getMeasurement(attributes.lineHeight, "0pt")
      : "";
    this.marginLeft = attributes.marginLeft
      ? getMeasurement(attributes.marginLeft, "0pt")
      : "";
    this.marginRight = attributes.marginRight
      ? getMeasurement(attributes.marginRight, "0pt")
      : "";
    this.orphans = getInteger({
      data: attributes.orphans,
      defaultValue: 0,
      validate: x => x >= 0,
    });
    this.preserve = attributes.preserve || "";
    this.radixOffset = attributes.radixOffset
      ? getMeasurement(attributes.radixOffset, "0pt")
      : "";
    this.spaceAbove = attributes.spaceAbove