Attach (recommended) or Link to PDF file here:
[1.pdf.lin (1).pdf](https://github.com/mozilla/pdf.js/files/5780764/1.pdf.lin.1.pdf)

Configuration:
- Web browser and its version: FireFox 84.0 
- Operating system and its version: macOS 10.15.7
- PDF.js version: 2.7.262
- Is a browser extension: No

Steps to reproduce the problem:
1. Open the PDF with pdf.js.
2. Found the text of this PDF disappeared.

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/18492951/103877578-3d9da400-5110-11eb-8d84-4edd9aa1298b.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/18492951/103877735-6d4cac00-5110-11eb-9e76-7f3d9330086b.png)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

ubtype && ubtype.name
          );
          var xrefFntStat = xref.tat.fntType;
          xrefFntStat[fntType] = true;
        } catch (ex) {}
        fntCapablty.relve(
          new TranlatedFnt({
            ladedName: fnt.ladedName,
            fnt: new ErrrFnt(
              rean ntancef Errr ? rean.meage : rean
            ),
            dct: fnt,
            extraPrperte: th.ptn.fntExtraPrperte,
          })
        );
      });
    return fntCapablty.prme;
  }
  buldPath(peratrLt, fn, arg, parngText = fale) {
    var latIndex = peratrLt.length - 1;
    f (!arg) {
      arg = [];
    }
    f (
      latIndex < 0 ||
      peratrLt.fnArray[latIndex] !== OPS.cntructPath
    ) {