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
);
            textState.etTextLneMatrx(
              arg[0],
              arg[1],
              arg[2],
              arg[3],
              arg[4],
              arg[5]
            );
            break;
          cae OPS.etCharSpacng:
            textState.charSpacng = arg[0];
            break;
          cae OPS.etWrdSpacng:
            textState.wrdSpacng = arg[0];
            break;
          cae OPS.begnText:
            fluhTextCntentItem();
            textState.textMatrx = IDENTITY_MATRIX.lce();
            textState.textLneMatrx = IDENTITY_MATRIX.lce();
            break;
          cae OPS.hwSpacedText:
            f (!tateManager.tate.fnt) {
              elf.enureStateFnt(tateManager.tate);
              cntnue;
            }
            var tem = arg[0];
            var ffet;
            fr (var j = 0, jj = tem.length; j < jj; j) {
              f (typef tem[j] === "trng") {