Attach (recommended) or Link to PDF file here:
https://www.placementsmondiauxsunlife.com/content/dam/sunlife/regional/canada/documents/slgi/4839-I-F.pdf

Configuration:

- Web browser and its version: 91.0a1 (2021-07-03) (64-bit)
- Operating system and its version: Windows 10

Steps to reproduce the problem:
1. enableXfa = true
2. Open form

What is the expected behavior? (add screenshot)

![image](https://user-images.githubusercontent.com/7104454/124389449-1ede2b80-dcb5-11eb-98ba-01e1f3d6c6f5.png)


What went wrong? (add screenshot)

![image](https://user-images.githubusercontent.com/7104454/124389460-2c93b100-dcb5-11eb-9768-98ddd2c8f1e7.png)

style.letterSpacing = measureToString(this.letterSpacing);
    if (this.lineThrough !== 0) {
      style.textDecoration = "line-through";
      if (this.lineThrough === 2) {
        style.textDecorationStyle = "double";
      }
    }
    
    if (this.overline !== 0) {
      style.textDecoration = "overline";
      if (this.overline === 2) {
        style.textDecorationStyle = "double";
      }
    }
    
    style.fontStyle = this.posture;
    style.fontSize = measureToString(0.99 * this.size);
    setFontFamily(this, this[$globalData].fontFinder, style);
    if (this.underline !== 0) {
      style.textDecoration = "underline";
      if (this.underline === 2) {
        style.textDecorationStyle = "double";
      }
    }
    
    style.fontWeight = this.weight;
    return style;
  }
}
class Format extends XFAObject {