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
return;
                }
                f (elf.ptn.gnreErrr) {
                  
                  
                  elf.handler.end("UnupprtedFeature", {
                    featureId: UNSUPPORTED_FEATURES.errrExtGState,
                  });
                  warn(`getOperatrLt - gnrng ExtGState: "${rean}".`);
                  return;
                }
                thrw rean;
              })
            );
            return;
          cae OPS.mveT:
          cae OPS.lneT:
          cae OPS.curveT:
          cae OPS.curveT2:
          cae OPS.curveT3:
          cae OPS.clePath:
          cae OPS.rectangle: