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)

constructor(attributes) {
    super(TEMPLATE_NS_ID, "proto",  true);
    this.appearanceFilter = new XFAObjectArray();
    this.arc = new XFAObjectArray();
    this.area = new XFAObjectArray();
    this.assist = new XFAObjectArray();
    this.barcode = new XFAObjectArray();
    this.bindItems = new XFAObjectArray();
    this.bookend = new XFAObjectArray();
    this.boolean = new XFAObjectArray();
    this.border = new XFAObjectArray();
    this.break = new XFAObjectArray();
    this.breakAfter = new XFAObjectArray();
    this.breakBefore = new XFAObjectArray();
    this.button = new XFAObjectArray();
    this.calculate = new XFAObjectArray();
    this.caption = new XFAObjectArray();
    this.certificate = new XFAObjectArray();
    this.certificates = new XFAObjectArray();
    this.checkButton = new XFAObjectArray();
    this.choiceList = new XFAObjectArray();
    this.color = new XFAObjectArray();
    this.comb = new XFAObjectArray();
    this.connect = new XFAObjectArray();
    this.contentArea = new XFAObjectArray();