Attach (recommended) or Link to PDF file here:
[test.pdf](https://github.com/mozilla/pdf.js/files/6715502/test.pdf)

Configuration:
- Web browser and its version: Google Chrome Version 91.0.4472.114 
- Operating system and its version: Windows 10 Enterprise
- PDF.js version: 
- Is a browser extension: yes

Steps to reproduce the problem:
1. download file
2. open file



What is the expected behavior? (add screenshot)
show symbol
![image](https://user-images.githubusercontent.com/50500976/123409847-55ca8800-d5b7-11eb-9e5b-c7f3b33c00e1.png)

What went wrong? (add screenshot)
Does not show symbol
![image](https://user-images.githubusercontent.com/50500976/123409707-274cad00-d5b7-11eb-9a64-b11dcf3cdc3f.png)
Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension): Latest Version Chrome extension

const renderer = FontRendererFactory.create(this, SEAC_ANALYSIS_ENABLED);
    return shadow(this, "renderer", renderer);
  }
  exportData(extraProperties = false) {
    const exportDataProperties = extraProperties
      ? [...EXPORT_DATA_PROPERTIES, ...EXPORT_DATA_EXTRA_PROPERTIES]
      : EXPORT_DATA_PROPERTIES;
    const data = Object.create(null);
    let property, value;
    for (property of exportDataProperties) {
      value = this[property];
      
      if (value !== undefined) {
        data[property] = value;
      }
    }
    return data;
  }
  fallbackToSystemFont(properties) {