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)




this.downloadInfoCapability.resolve(data);
    });
    messageHandler.on("StartRenderPage", data => {
      if (this.destroyed) {
        return; 
      }
      const page = this.pageCache[data.pageIndex];
      page._startRenderPage(data.transparency, data.intent);
    });
    messageHandler.on("commonobj", data => {
      if (this.destroyed) {
        return; 
      }
      const [id, type, exportedData] = data;
      if (this.commonObjs.has(id)) {
        return;
      }
      switch (type) {
        case "Font":
          const params = this._params;
          if ("error" in exportedData) {
            const exportedError = exportedData.error;
            warn(`Error during font loading: ${exportedError}`);
            this.commonObjs.resolve(id, exportedError);
            break;
          }
          let fontRegistry = null;
          if (params.pdfBug && globalThis.FontInspector?.enabled) {
            fontRegistry = {
              registerFont(font, url) {