PDF text is not displayed completely

I found a problem with the display. I now have a PDF file and it does not display all the text.

![image](https://user-images.githubusercontent.com/27802441/119288233-c1e56380-bc7a-11eb-816b-fcda54d97f8d.png)

[20200927_204903_509.pdf](https://github.com/mozilla/pdf.js/files/6529459/20200927_204903_509.pdf)
