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)

this.bind = null;
    this.border = null;
    this.calculate = null;
    this.caption = null;
    this.desc = null;
    this.extras = null;
    this.font = null;
    this.format = null;
    
    
    this.items = new XFAObjectArray(2);
    this.keep = null;
    this.margin = null;
    this.para = null;
    this.traversal = null;
    this.ui = null;
    this.validate = null;
    this.value = null;
    this.bindItems = new XFAObjectArray();
    this.connect = new XFAObjectArray();
    this.event = new XFAObjectArray();
    this.setProperty = new XFAObjectArray();
  }
  [$isBindable]() {
    return true;
  }
  [$setValue](value) {
    _setValue(this, value);
  }
  [$toHTML](availableSpace) {