Attach (recommended) or Link to PDF file here: https://github.com/tesseract-ocr/tesseract/files/947838/2.pdf

Configuration:
- Web browser and its version: N/A
- Operating system and its version: N/A
- PDF.js version: `2.9.223`, or any version after PR #13306 landed.
- Is a browser extension: N/A

Steps to reproduce the problem:
1. Open the document above, e.g. with https://mozilla.github.io/pdf.js/web/viewer.html
2. Search for "of the r"

What is the expected behavior? (add screenshot)
Correct highlighting, please see:

![correct](https://user-images.githubusercontent.com/2692120/117328223-b7158b00-ae93-11eb-805c-73718ff569b5.png)


What went wrong? (add screenshot)
Incorrect highlighting, please see:

![incorrect](https://user-images.githubusercontent.com/2692120/117328447-efb56480-ae93-11eb-8506-da9fc0eb9630.png)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension): N/A

/cc @brendandahl 

) {
          clearTimeout(expandDivsTimer);
          expandDivsTimer = null;
        }
        return;
      }
      const end = div.querySelector(".endOfContent");
      if (!end) {
        return;
      }
      if (typeof PDFJSDev === "undefined" || !PDFJSDev.test("MOZCENTRAL")) {
        
        
        
        
        let adjustTop = evt.target !== div;
        if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
          adjustTop =
            adjustTop &&
            window
              .getComputedStyle(end)
              .getPropertyValue("-moz-user-select") !== "none";
        }
        if (adjustTop) {
          const divBounds = div.getBoundingClientRect();
          const r = Math.max(0, (evt.pageY - divBounds.top) / divBounds.height);
          end.style.top = (r * 100).toFixed(2) + "%";
        }
      }
      end.classList.add("active");