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

this.defaultEncoding,
        getGlyphsUnicode(),
        this.differences
      );
      if (
        type === "CIDFontType2" &&
        !this.cidEncoding.startsWith("Identity-") &&
        !(this.toUnicode instanceof IdentityToUnicodeMap)
      ) {
        this.toUnicode.forEach(function (charCode, unicodeCharCode) {
          map[+charCode] = unicodeCharCode;
        });
      }
      this.toFontChar = map;
    } else {
      const glyphsUnicodeMap = getGlyphsUnicode();
      const map = [];
      this.toUnicode.forEach((charCode, unicodeCharCode) => {
        if (!this.composite) {
          const glyphName =
            this.differences[charCode] || this.defaultEncoding[charCode];
          const unicode = getUnicodeForGlyph(glyphName, glyphsUnicodeMap);
          if (unicode !== -1) {
            unicodeCharCode = unicode;
          }
        }
        map[+charCode] = unicodeCharCode;
      });