Attach (recommended) or Link to PDF file here: [ICEE-B.2017.8192026.pdf](https://github.com/mozilla/pdf.js/files/6651211/ICEE-B.2017.8192026.pdf)

Configuration:
- Web browser and its version:  Firefox 89.0 (64-bit)
- Operating system and its version: Windows 10 Pro Version 21H1
- PDF.js version: I don't know, sorry
- Is a browser extension: No

Steps to reproduce the problem:
1. Open PDF
2. Figure 1 in page 2 is missing

What is the expected behavior? (add screenshot)
This is how it looks in Edge
![image](https://user-images.githubusercontent.com/40286841/121958287-839b0b80-cd31-11eb-8400-7d9c088d83fa.png)

What went wrong? (add screenshot)
This is how it looks in firefox
![image](https://user-images.githubusercontent.com/40286841/121958359-99a8cc00-cd31-11eb-9d15-b94d5884e03d.png)


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

let xa, car, cag, cab;
  let xb, cbr, cbg, cbb;
  for (let y = minY; y <= maxY; y++) {
    if (y < y2) {
      let k;
      if (y < y1) {
        k = 0;
      } else if (y1 === y2) {
        k = 1;
      } else {
        k = (y1 - y) / (y1 - y2);
      }
      xa = x1 - (x1 - x2) * k;
      car = c1r - (c1r - c2r) * k;
      cag = c1g - (c1g - c2g) * k;
      cab = c1b - (c1b - c2b) * k;
    } else {
      let k;
      if (y > y3) {
        k = 1;
      } else if (y2 === y3) {
        k = 0;
      } else {
        k = (y2 - y) / (y2 - y3);
      }
      xa = x2 - (x2 - x3) * k;
      car = c2r - (c2r - c3r) * k;
      cag = c2g - (c2g - c3g) * k;
      cab = c2b - (c2b - c3b) * k;
    }