Attach (recommended) or Link to PDF file here: [A3_Quer.pdf](https://github.com/mozilla/pdf.js/files/7373152/A3_Quer.pdf)


**Configuration:**

- Web browser and its version: Firefox 93.0
- Operating system and its version: macOS 11.6
- PDF.js version: 2.5.207
- Is a browser extension: no

**Steps to reproduce the problem:**
1. Open the attached file in Firefox

We discovered this issue in on older version of this library, but it can be reproduced in the current version of Firefox.

**What is the expected behavior? (add screenshot)**
The file should be rendered with a linear gradient as a background:
![Bildschirmfoto 2021-10-19 um 14 34 00](https://user-images.githubusercontent.com/8649002/137910027-07947e34-700b-4692-b225-d38c36da0d37.png)


**What went wrong? (add screenshot)**
The file is rendered without any background:
![Bildschirmfoto 2021-10-19 um 14 35 05](https://user-images.githubusercontent.com/8649002/137910215-a6b8fb9e-ff95-49f0-93b4-c9f127bd49c1.png)



**Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):**
none
getIR() {
    return ["Dummy"];
  }
}
function getTilingPatternIR(operatorList, dict, color) {
  const matrix = dict.getArray("Matrix");
  const bbox = Util.normalizeRect(dict.getArray("BBox"));
  const xstep = dict.get("XStep");
  const ystep = dict.get("YStep");
  const paintType = dict.get("PaintType");
  const tilingType = dict.get("TilingType");
  
  
  if (bbox[2] - bbox[0] === 0 || bbox[3] - bbox[1] === 0) {
    throw new FormatError(`Invalid getTilingPatternIR /BBox array: [${bbox}].`);
  }
  return [
    "TilingPattern",
    color,
    operatorList,
    matrix,
    bbox,
    xstep,
    ystep,
    paintType,
    tilingType,
  ];
}
export { getTilingPatternIR, Pattern };