https://issues.apache.org/jira/secure/attachment/12744264/gs-bugzilla690297.pdf
Tiffany, Kelly and Doris (at the bottom) are not rendered. They are all in patterns, the other ladies (Paula, Denise and Neita) are not.

We at PDFBox do also have a problem with the same ladies, but a different one, see
https://issues.apache.org/jira/browse/PDFBOX-2864

See also
https://issues.apache.org/jira/browse/PDFBOX-1958
https://issues.apache.org/jira/secure/attachment/12632189/cinnebar.pdf
https://issues.apache.org/jira/secure/attachment/12631470/PATTYP2.pdf
The problem is to apply a stencil to a pattern color.

height,
          true
        );
        this.compositeCtx = this.ctx;
        this.transparentCanvas = transparentCanvas.canvas;
        this.ctx = transparentCanvas.context;
        this.ctx.save();
        
        
        this.ctx.transform.apply(
          this.ctx,
          this.compositeCtx.mozCurrentTransform
        );
      }
      this.ctx.save();
      resetCtxToDefault(this.ctx);
      if (transform) {
        this.ctx.transform.apply(this.ctx, transform);
      }
      this.ctx.transform.apply(this.ctx, viewport.transform);
      this.baseTransform = this.ctx.mozCurrentTransform.slice();
      this._combinedScaleFactor = Math.hypot(
        this.baseTransform[0],
        this.baseTransform[2]
      );
      if (this.imageLayer) {
        this.imageLayer.beginLayout();
      }
    }
    executeOperatorList(