Bug found :: Tansparency issue

I have found a bug, it has been this way ever since I've used KLWP I just always forgot to post it. The problem is with crop image function. Whenever I use a .png that has transparency if I use the crop image function it turns the transparent areas black. I have triple check my .png's and it's not them, in fact transparency is fine in the editor until i use crop image. And yes it saves with the black too, so it's not just limited to the editor. The process I'm using is as follows::

+New Shape, Fx, texture Bitmap, pick image, and then crop image.

I have also taken and included screenshots at the end of the post. As you can see in the screenshots the transparency is fine before and during the crop, once crop is completed it then turns black.

thanks for taking the time to read this. If you have a work around please let me know.