Attach (recommended) or Link to PDF file here:
[PATTYP2.pdf](https://github.com/mozilla/pdf.js/files/6471935/PATTYP2.pdf)

Configuration:
- Web browser and its version: FF 88.0.1
- Operating system and its version: W10.0.19042.985
- PDF.js version: https://mozilla.github.io/pdf.js/web/viewer.html

Steps to reproduce the problem:
1. open file to display

What is the expected behavior? (add screenshot)
![grafik](https://user-images.githubusercontent.com/6665575/118114800-5e407800-b3e8-11eb-860f-019f48a8eabf.png)

What went wrong? (add screenshot)
![grafik](https://user-images.githubusercontent.com/6665575/118114841-6c8e9400-b3e8-11eb-8252-1517e5d76475.png)

(memo for me: when fixed, check the files in https://issues.apache.org/jira/browse/PDFBOX-1958 )

bold = "900";
      } else if (fontObj.bold) {
        bold = "bold";
      }
      const italic = fontObj.italic ? "italic" : "normal";
      const typeface = `"${name}", ${fontObj.fallbackName}`;
      
      
      
      
      let browserFontSize = size;
      if (size < MIN_FONT_SIZE) {
        browserFontSize = MIN_FONT_SIZE;
      } else if (size > MAX_FONT_SIZE) {
        browserFontSize = MAX_FONT_SIZE;
      }
      this.current.fontSizeScale = size / browserFontSize;
      this.ctx.font = `${italic} ${bold} ${browserFontSize}px ${typeface}`;
    }
    setTextRenderingMode(mode) {
      this.current.textRenderingMode = mode;
    }
    setTextRise(rise) {
      this.current.textRise = rise;
    }
    moveText(x, y) {
      this.current.x = this.current.lineX += x;
      this.current.y = this.current.lineY += y;
    }
    setLeadingMoveText(x, y) {