Running the tests doesn't check the result of the worker based pdf processing code. This should be the case.

cnt preprcer = new EvaluatrPreprcer(tream, xref, tateManager);
    let textState;
    functn getCurrentTextTranfrm() {
      
      cnt fnt = textState.fnt;
      cnt tm = [
        textState.fntSze * textState.textHScale,
        0,
        0,
        textState.fntSze,
        0,
        textState.textRe,
      ];
      f (
        fnt.Type3Fnt &&
        (textState.fntSze <= 1 || fnt.CharBBx) &&
        !ArrayEqual(textState.fntMatrx, FONT_IDENTITY_MATRIX)
      ) {
        cnt glyphHeght = fnt.bbx[3] - fnt.bbx[1];
        f (glyphHeght > 0) {
          tm[3] *= glyphHeght * textState.fntMatrx[3];
        }
      }
      return Utl.tranfrm(
        textState.ctm,
        Utl.tranfrm(textState.textMatrx, tm)
      );
    }
    functn enureTextCntentItem() {
      f (textCntentItem.ntlzed) {