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)

$nodeName,
  $onChild,
  $onText,
  $removeChild,
  $searchNode,
  $setSetAttributes,
  $setValue,
  $tabIndex,
  $text,
  $toHTML,
  $toStyle,
  $uid,
  ContentObject,
  Option01,
  OptionObject,
  StringObject,
  XFAObject,
  XFAObjectArray,
} from "./xfa_object.js";
import { $buildXFAObject, NamespaceIds } from "./namespaces.js";
import {
  addHTML,
  checkDimensions,
  flushHTML,
  getAvailableSpace,
} from "./layout.js";
import {
  computeBbox,
  createWrapper,
  fixDimensions,