Attach (recommended) or Link to PDF file here:
PDF is [Sample lease contract 26.pdf](https://github.com/mozilla/pdf.js/files/1500985/Sample.lease.contract.26.pdf)

Steps to reproduce the problem:
I am using [https://mozilla.github.io/pdf.js/web/viewer.html](url) to preview pdf by opening the pdf.

now am searching for "**made is**" but its not showing in the pdfjs

and while selecting and copying pdf  text it has no space in b/w words

let unicode = glyphsUnicodeMap[name];
  if (unicode !== undefined) {
    return unicode;
  }
  if (!name) {
    return -1;
  }
  
  if (name[0] === "u") {
    const nameLen = name.length;
    let hexStr;
    if (nameLen === 7 && name[1] === "n" && name[2] === "i") {
      
      hexStr = name.substring(3);
    } else if (nameLen >= 5 && nameLen <= 7) {
      
      hexStr = name.substring(1);
    } else {
      return -1;
    }
    
    if (hexStr === hexStr.toUpperCase()) {
      unicode = parseInt(hexStr, 16);
      if (unicode >= 0) {
        return unicode;
      }
    }
  }