Link to PDF file (or attach file here):
[pages4.pdf](https://github.com/mozilla/pdf.js/files/1128300/pages4.pdf)

Configuration:
- Web browser and its version: Firefox 54
- Operating system and its version: Win 10
- PDF.js version: 1.8.522
- Is an extension: no

What is the expected behavior? (add screenshot)
![chrome1-1 1](https://user-images.githubusercontent.com/146436/27918380-2f74512a-6245-11e7-8525-d0038fa6c2e8.jpg)
![chrome1-2 1](https://user-images.githubusercontent.com/146436/27918425-54f8e47e-6245-11e7-9bff-127f79ad0511.jpg)


What went wrong? (add screenshot)
![screenshot from 2017-07-06 12-10-30](https://user-images.githubusercontent.com/146436/27918442-5d57624e-6245-11e7-9436-5ba31cc8bd1a.png)
![screenshot from 2017-07-06 12-10-44](https://user-images.githubusercontent.com/146436/27918454-63b486da-6245-11e7-9eb5-c03aa5c40943.png)



this.save();
    if (this.baseTransform) {
      this.ctx.setTransform.apply(this.ctx, this.baseTransform);
    }
  }
  endAnnotations() {
    this.restore();
  }
  beginAnnotation(id, rect, transform, matrix) {
    this.save();
    resetCtxToDefault(this.ctx);
    this.current = new CanvasExtraState();
    if (Array.isArray(rect) && rect.length === 4) {
      const width = rect[2] - rect[0];
      const height = rect[3] - rect[1];
      this.ctx.rect(rect[0], rect[1], width, height);
      this.clip();
      this.endPath();
    }
    this.transform.apply(this, transform);
    this.transform.apply(this, matrix);
  }
  endAnnotation() {
    this.restore();
  }
  paintImageMaskXObject(img) {