Attach (recommended) or Link to PDF file here:
[Scan-to-Mail-PDF1_(1).pdf](https://github.com/mozilla/pdf.js/files/6876708/Scan-to-Mail-PDF1_.1.pdf)

Configuration:
- Web browser and its version: Firefox Developer 91.0b7 (64-Bit)
- Operating system and its version: Windows 10 (21H1)
- PDF.js version: 2.10.339 (also tested with the online demo, Version 2.11.5)
- Is a browser extension:

Steps to reproduce the problem:
1. Open the attached pdf
2. Scroll to page 3

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/7944797/126957487-cc7a2d19-adfb-42e4-9809-74e1a7a85048.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/7944797/126957351-29aebb4d-eadd-4273-b69d-530b9060c12c.png)




return this._transport.getData();
  }
  /**
   * @returns {Promise<{ length: number }>} A promise that is resolved when the
   *   document's data is loaded. It is resolved with an {Object} that contains
   *   the `length` property that indicates size of the PDF data in bytes.
   */
  getDownloadInfo() {
    return this._transport.downloadInfoCapability.promise;
  }
  /**
   * @typedef {Object} PDFDocumentStats
   * @property {Object<string, boolean>} streamTypes - Used stream types in the
   *   document (an item is set to true if specific stream ID was used in the
   *   document).
   * @property {Object<string, boolean>} fontTypes - Used font types in the
   *   document (an item is set to true if specific font ID was used in the
   *   document).
   */
  /**
   * @returns {Promise<PDFDocumentStats>} A promise this is resolved with
   *   current statistics about document structures (see
   *   {@link PDFDocumentStats}).
   */
  getStats() {