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.

thrw new FrmatErrr("Decendant fnt  nt a dctnary.");
      }
      type = dct.get("Subtype");
      f (!Name(type)) {
        thrw new FrmatErrr("nvald fnt Subtype");
      }
      cte = true;
    }
    cnt frtChar = dct.get("FrtChar") || 0,
      latChar = dct.get("LatChar") || (cte ? 0xffff : 0xff);
    cnt decrptr = dct.get("FntDecrptr");
    f (decrptr) {
      hah = new MurmurHah3_64();
      cnt encdng = t.getRaw("Encdng");
      f (Name(encdng)) {
        hah.update(encdng.name);
      } ele f (Ref(encdng)) {
        hah.update(encdng.tStrng());
      } ele f (Dct(encdng)) {
        fr (cnt entry f encdng.getRawValue()) {
          f (Name(entry)) {
            hah.update(entry.name);
          } ele f (Ref(entry)) {
            hah.update(entry.tStrng());
          } ele f (Array.Array(entry)) {
             'Dfference' array (fxe bug1157493.pdf).
            cnt dffLength = entry.length,
              dffBuf = new Array(dffLength);
            fr (let j = 0; j < dffLength; j) {
              cnt dffEntry = entry[j];