PGraphics::scale() not exporting in P3D

When exporting a PGraphicss P3D object, save() doesn't reflect calls to scale(). Consider the example, taken from https://forum.processing.org/two/discussion/3227/high-resolution-export-p3d: (note that endRecord() and PGpx.scale() had to be changed in order for the original example to work):

boolean record;
int scalePG = 2;

void setup() {
    size(600, 600, P3D);
    smooth();
}

void draw() {
    if(!record)
        background(#ffffff);
    translate(width/2, height/2);
    fill(#ff0000);
    rotateX(60);
    rotateZ(60);
    box(100);
}
void keyPressed() {
    save("lowres.png");

    if(keyCode == ENTER) {
        PGraphics PGpx = createGraphics(width * scalePG, height * scalePG, P3D);
        record = true;
        beginRecord(PGpx);
        PGpx.background(#ffffff, 0); // Clear the offscreen canvas (make it transparent)
        PGpx.scale(scalePG);
        draw();
        endRecord(); // originally was AFTER call to save() in next line - but didn't save anything.
        PGpx.save("highres.png"); // Save image as PNG (JPGs can't have an alpha channel) and save it before endRecord()

        record = false;
    }
}

I posted some pictures about this in this post: https://forum.processing.org/two/discussion/17162/high-resolution-output-for-p3d

Does anyone know how to fix this?