Crop operation not working in JAI 1.1.3?

Question

The "crop" operation seems to be broken in JAI 1.1.3 (at least for Windows):
When cropping an image, the values for x and y are ignored and the new image is always the part from the upper left corner of the original image.
In JAI 1.1.2 this worked correctly.
Code to reproduce the problem (call program with old and new filename as parameters):
The program should cut out an image with half the height and width from the middle of the original image.
public static void main(String[] args) {
// load image
ParameterBlock loadPB = new ParameterBlock();
loadPB.add(args[0]);
RenderedOp image = JAI.create("fileload", loadPB);
// crop image
int width = image.getWidth();
int height = image.getHeight();
int newWidth = width / 2;
int newHeight = height / 2;
ParameterBlock pb = new ParameterBlock();
pb.addSource(image);
pb.add((float)(width - newWidth)/2);
pb.add((float)(height - newHeight)/2);
pb.add((float)newWidth);
pb.add((float)newHeight);
RenderedOp cropped = JAI.create("crop", pb, null);
// save image
ParameterBlock savePB = new ParameterBlock();
savePB.addSource(cropped);
savePB.add(args[1]);
savePB.add("jpeg");
JAI.create("filestore", savePB);
}

Answer 1

I also did that. I checked out if any crop had been done, and if so, save as BufferImage.
     public void save(String destinationFilename) {
          if (workaroundJPEG) {
               //Workaround for JAI JPEG saving bug of no tile support (crop problems)
               final int QUALITY = 75;
               BufferedImage bufferedImage = objImage.getRendering().getAsBufferedImage();
               try {
                    FileOutputStream fos = new FileOutputStream(destinationFilename);
                    BufferedOutputStream bos = new BufferedOutputStream(fos);
                    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(bos);
                    JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bufferedImage);
                    param.setQuality(QUALITY / 100.0f, false);
                    encoder.setJPEGEncodeParam(param);
                    encoder.encode(bufferedImage);
                    bos.close();
                    workaroundJPEG = false;
               } catch (IOException e) {
                    // handle errors
          } else {
               JAI.create("filestore", objImage, destinationFilename, "JPEG", null);
     }Each time I do a crop operation I set the workaroundJPEG to true.