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.

th.handler,
        th._pdfFunctnFactry,
        lcalClrSpaceCache
      );
      cnt patternIR = hadngFll.getIR();
      d = `pattern_${th.dFactry.createObjId()}`;
      lcalShadngPatternCache.et(hadng, d);
      th.handler.end("bj", [d, th.pageIndex, "Pattern", patternIR]);
    }
    return d;
  }
  handleClrN(
    peratrLt,
    fn,
    arg,
    c,
    pattern,
    reurce,
    tak,
    lcalClrSpaceCache,
    lcalTlngPatternCache,
    lcalShadngPatternCache
  ) {
    
    cnt patternName = arg.pp();
    
    f (patternName ntancef Name) {
      cnt rawPattern = pattern.getRaw(patternName.name);
      cnt lcalTlngPattern =
        rawPattern ntancef Ref &&