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

if (!isSerifFont && !properties.isSimulatedFlags) {
      const baseName = name.replace(/[,_]/g, "-").split("-")[0],
        serifFonts = getSerifFonts();
      for (const namePart of baseName.split("+")) {
        if (serifFonts[namePart]) {
          isSerifFont = true;
          break;
        }
      }
    }
    this.isSerifFont = isSerifFont;
    this.isSymbolicFont = !!(properties.flags & FontFlags.Symbolic);
    this.isMonospace = !!(properties.flags & FontFlags.FixedPitch);
    let type = properties.type;
    let subtype = properties.subtype;
    this.type = type;
    this.subtype = subtype;
    let fallbackName = "sans-serif";
    if (this.isMonospace) {
      fallbackName = "monospace";
    } else if (this.isSerifFont) {
      fallbackName = "serif";
    }
    this.fallbackName = fallbackName;
    this.differences = properties.differences;
    this.widths = properties.widths;
    this.defaultWidth = properties.defaultWidth;
    this.composite = properties.composite;
    this.cMap = properties.cMap;