https://pdf.yt/d/BeioWriXAn-DkFcO

When searching the above pdf for the phrase 'acute' the second hit hightlights the nearby word ' especi'.  Almost certainly this is the same issue that I raised in #5667 

However, when examining the generated html you can see that the highlighted text is incorrect - it contains the text ' especi' and not the search term 'acute' - it is not a positioning issue.  (see screenshot).

I am using Chrome 39, windows 8.1 x64 and pdf.js 1.0.1093

![image](https://cloud.githubusercontent.com/assets/10129039/5864096/f2d665a4-a276-11e4-91fa-af6eb36f0cde.png)

const divIdx = begin.divIdx;
      textDivs[divIdx].textContent = "";
      appendTextToDiv(divIdx, 0, begin.offset, className);
    }
    function appendTextToDiv(divIdx, fromOffset, toOffset, className) {
      const div = textDivs[divIdx];
      const content = textContentItemsStr[divIdx].substring(
        fromOffset,
        toOffset
      );
      const node = document.createTextNode(content);
      if (className) {
        const span = document.createElement("span");
        span.className = className;
        span.appendChild(node);
        div.appendChild(span);
        return;
      }
      div.appendChild(node);
    }