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

warn("cmap table has unsupported format: " + format);
        return {
          platformId: -1,
          encodingId: -1,
          mappings: [],
          hasShortCmap: false,
        };
      }
      
      mappings.sort(function (a, b) {
        return a.charCode - b.charCode;
      });
      for (let i = 1; i < mappings.length; i++) {
        if (mappings[i - 1].charCode === mappings[i].charCode) {
          mappings.splice(i, 1);
          i--;
        }
      }
      return {
        platformId: potentialTable.platformId,
        encodingId: potentialTable.encodingId,
        mappings,
        hasShortCmap,
      };
    }
    function sanitizeMetrics(
      file,
      header,
      metrics,
      headTable,