Attach (recommended) or Link to PDF file here:
[PATTYP2.pdf](https://github.com/mozilla/pdf.js/files/6471935/PATTYP2.pdf)

Configuration:
- Web browser and its version: FF 88.0.1
- Operating system and its version: W10.0.19042.985
- PDF.js version: https://mozilla.github.io/pdf.js/web/viewer.html

Steps to reproduce the problem:
1. open file to display

What is the expected behavior? (add screenshot)
![grafik](https://user-images.githubusercontent.com/6665575/118114800-5e407800-b3e8-11eb-860f-019f48a8eabf.png)

What went wrong? (add screenshot)
![grafik](https://user-images.githubusercontent.com/6665575/118114841-6c8e9400-b3e8-11eb-8252-1517e5d76475.png)

(memo for me: when fixed, check the files in https://issues.apache.org/jira/browse/PDFBOX-1958 )

ctx = this.ctx;
    
    let matrix = ctx.mozCurrentTransformInverse;
    if (!shadingFill) {
      matrix = Util.transform(matrix, owner.baseTransform);
      if (this.matrix) {
        matrix = Util.transform(matrix, this.matrix);
      }
    }
    const temporaryPatternCanvas = this.createPatternCanvas(owner);
    let domMatrix = createMatrix(matrix);
    
    
    domMatrix = domMatrix.scale(
      1 / temporaryPatternCanvas.scaleX,
      1 / temporaryPatternCanvas.scaleY
    );
    const pattern = ctx.createPattern(temporaryPatternCanvas.canvas, "repeat");
    pattern.setTransform(domMatrix);
    return pattern;
  }
}
export { getShadingPattern, TilingPattern };