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 pdfDocument = this._pdfDocument;
    
    
    
    this._firstPageCapability.promise.then(() => {
      
      if (
        !this._pdfDocument ||
        (pdfDocument && this._pdfDocument !== pdfDocument)
      ) {
        return;
      }
      
      if (this._findTimeout) {
        clearTimeout(this._findTimeout);
        this._findTimeout = null;
      }