https://boersengefluester.de/wp-content/uploads/assets/annuals/2019/578560.pdf

Configuration:
- PDF.js version: 2.7.570

Steps to reproduce the problem:
1. Load the linked PDF
2. On the second page, highlight the word "Mitarbeiterinnen" by double-clicking it

What is the expected behavior?
The word should be recognized as a single word and highlighted as such.

What went wrong?
Instead, it's recognized as 3 words: "Mit", "arbei", "terinnen"
![image](https://user-images.githubusercontent.com/5265630/114384414-f8fe2a80-9b8e-11eb-8843-5099425b0fad.png)

This happens for many words in this PDF.

Is there anything that can be changed in how I use pdfjs-dist to make it recognize this as a single word? Just looking at the PDF, I can't tell what would cause this behavior.

for (let j = 0, jj = points.length; j < jj; j++) {
      const t = Util.applyTransform(points[j], m);
      ts[j + 0] = c && (e.left - t[0]) / c;
      ts[j + 4] = s && (e.top - t[1]) / s;
      ts[j + 8] = c && (e.right - t[0]) / c;
      ts[j + 12] = s && (e.bottom - t[1]) / s;
      ts[j + 16] = s && (e.left - t[0]) / -s;
      ts[j + 20] = c && (e.top - t[1]) / c;
      ts[j + 24] = s && (e.right - t[0]) / -s;
      ts[j + 28] = c && (e.bottom - t[1]) / c;
      ts[j + 32] = c && (e.left - t[0]) / -c;
      ts[j + 36] = s && (e.top - t[1]) / -s;
      ts[j + 40] = c && (e.right - t[0]) / -c;
      ts[j + 44] = s && (e.bottom - t[1]) / -s;
      ts[j + 48] = s && (e.left - t[0]) / s;
      ts[j + 52] = c && (e.top - t[1]) / -c;
      ts[j + 56] = s && (e.right - t[0]) / s;
      ts[j + 60] = c && (e.bottom - t[1]) / -c;
    }
    
    
    const boxScale = 1 + Math.min(Math.abs(c), Math.abs(s));
    divProperties.paddingLeft = findPositiveMin(ts, 32, 16) / boxScale;
    divProperties.paddingTop = findPositiveMin(ts, 48, 16) / boxScale;
    divProperties.paddingRight = findPositiveMin(ts, 0, 16) / boxScale;
    divProperties.paddingBottom = findPositiveMin(ts, 16, 16) / boxScale;
    task._textDivProperties.set(div, divProperties);
  }
}
function expandBounds(width, height, boxes) {