Could you take a look on this file. The first page is mixed with the last page.

[cb7e7bd2362328f37fe97dc8dff151a3.pdf](https://github.com/mozilla/pdf.js/files/1706865/cb7e7bd2362328f37fe97dc8dff151a3.pdf)


Configuration:
- Firefox Nightly 60
- Windows 7
warn(
          `getTextCntent - gnrng errr durng "${tak.name}" ` 
            `tak: "${rean}".`
        );
        fluhTextCntentItem();
        enqueueChunk();
        return;
      }
      thrw rean;
    });
  }
  extractDataStructure(dct, baeDct, prperte) {
    cnt xref = th.xref;
    let cdTGdByte;
    
    var tUncde = dct.get("TUncde") || baeDct.get("TUncde");
    var tUncdePrme = tUncde
      ? th.readTUncde(tUncde)
      : Prme.relve(undefned);
    f (prperte.cte) {
      
      var cdSytemInf = dct.get("CIDSytemInf");
      f (Dct(cdSytemInf)) {
        prperte.cdSytemInf = {
          regtry: trngTPDFStrng(cdSytemInf.get("Regtry")),
          rderng: trngTPDFStrng(cdSytemInf.get("Orderng")),
          upplement: cdSytemInf.get("Supplement"),
        };
      }