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

});
          } else {
            
            const s = subHeaders[subHeaderKeys[i]];
            for (j = 0; j < s.entryCount; j++) {
              const charCode = (i << 8) + j + s.firstCode;
              file.pos = s.idRangePos + 2 * j;
              glyphId = file.getUint16();
              if (glyphId !== 0) {
                glyphId = (glyphId + s.idDelta) % 65536;
              }
              mappings.push({
                charCode,
                glyphId,
              });
            }
          }
        }
      } else if (format === 4) {
        
        
        const segCount = file.getUint16() >> 1;
        file.skip(6); 
        const segments = [];
        let segIndex;
        for (segIndex = 0; segIndex < segCount; segIndex++) {
          segments.push({ end: file.getUint16() });
        }
        file.skip(2);
        for (segIndex = 0; segIndex < segCount; segIndex++) {