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.

xNew =
          affectedBoundary.index > boundary.index
            ? affectedBoundary.x1New
            : boundary.x1;
      } else if (affectedBoundary.x2New === undefined) {
        
        
        xNew = (affectedBoundary.x2 + boundary.x1) / 2;
      } else {
        
        xNew = affectedBoundary.x2New;
      }
      if (xNew > maxXNew) {
        maxXNew = xNew;
      }
    }
    
    boundary.x1New = maxXNew;
    
    for (q = i; q <= j; q++) {
      horizonPart = horizon[q];
      affectedBoundary = horizonPart.boundary;
      if (affectedBoundary.x2New === undefined) {
        
        if (affectedBoundary.x2 > boundary.x1) {
          
          
          if (affectedBoundary.index > boundary.index) {
            affectedBoundary.x2New = affectedBoundary.x2;
          }