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)

let buffer =
      this[$globalData].images && this[$globalData].images.get(this.href);
    if (!buffer && (this.href || !this[$content])) {
      
      
      return HTMLResult.EMPTY;
    }
    if (!buffer && this.transferEncoding === "base64") {
      buffer = stringToBytes(atob(this[$content]));
    }
    if (!buffer) {
      return HTMLResult.EMPTY;
    }
    
    const blob = new Blob([buffer], { type: this.contentType });
    let style;
    switch (this.aspect) {
      case "fit":
      case "actual":
        
        
        
        break;
      case "height":