Attach (recommended) or Link to PDF file here:
[Test file.pdf](https://github.com/mozilla/pdf.js/files/4656226/Test.file.pdf)

Configuration:
- Web browser and its version: Chrome Version 81.0.4044.138 (Official Build) (64-bit)
- Operating system and its version: Windows 10
- PDF.js version: latest
- Is a browser extension: no

Steps to reproduce the problem:
1. Open [https://mozilla.github.io/pdf.js/web/viewer.html](https://mozilla.github.io/pdf.js/web/viewer.html)
2. Load the provided .pdf file

What is the expected behavior? (add screenshot)
![image](https://user-images.githubusercontent.com/5569382/82438616-02c3fe80-9aa2-11ea-9003-b75ea1e7aac6.png)

What went wrong? (add screenshot)
![image](https://user-images.githubusercontent.com/5569382/82438640-09527600-9aa2-11ea-810b-071da7e37896.png)


accent.fontChar,
                scaledAccentX,
                scaledAccentY,
                patternTransform,
                resetLineWidthToOne
              );
            }
          }
        }
        let charWidth;
        if (vertical) {
          charWidth = width * widthAdvanceScale - spacing * fontDirection;
        } else {
          charWidth = width * widthAdvanceScale + spacing * fontDirection;
        }
        x += charWidth;
        if (restoreNeeded) {
          ctx.restore();
        }
      }
      if (vertical) {
        current.y -= x;
      } else {
        current.x += x * textHScale;
      }
      ctx.restore();
    },
    showType3Text: function CanvasGraphics_showType3Text(glyphs) {
      
      const ctx = this.ctx;