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):

buldTextCntentItem(tem[j]);
              } ele f (Num(tem[j])) {
                enureTextCntentItem();
                
                
                
                
                
                
                
                
                advance = (tem[j] * textState.fntSze) / 1000;
                var breakTextRun = fale;
                f (textState.fnt.vertcal) {
                  ffet = advance;
                  textState.tranlateTextMatrx(0, ffet);
                  breakTextRun =
                    textCntentItem.textRunBreakAllwed &&
                    advance > textCntentItem.fakeMultSpaceMax;
                  f (!breakTextRun) {
                    
                    textCntentItem.heght = ffet;
                  }
                } ele {
                  advance = -advance;
                  ffet = advance * textState.textHScale;
                  textState.tranlateTextMatrx(ffet, 0);
                  breakTextRun =
                    textCntentItem.textRunBreakAllwed &&
                    advance > textCntentItem.fakeMultSpaceMax;