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, "arc",  true);
    this.circular = getInteger({
      data: attributes.circular,
      defaultValue: 0,
      validate: x => x === 1,
    });
    this.hand = getStringOption(attributes.hand, ["even", "left", "right"]);
    this.id = attributes.id || "";
    this.startAngle = getFloat({
      data: attributes.startAngle,
      defaultValue: 0,
      validate: x => true,
    });
    this.sweepAngle = getFloat({
      data: attributes.sweepAngle,
      defaultValue: 360,
      validate: x => true,
    });
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
    this.edge = null;
    this.fill = null;
  }
  [$toHTML]() {
    const edge = this.edge ? this.edge : new Edge({});
    const edgeStyle = edge[$toStyle]();
    const style = Object.create(null);
    if (this.fill) {
      Object.assign(style, this.fill[$toStyle]());