The one on the right actually has more head room on the top. The picture is not being stretched, nor is it being copied, it is as if Blitz is showing part of the picture that normal graphics packages aren't supposed to be showing. Perhaps the JPEG file itself is corrupt, something to do with the layout of the file and the dimensions specified in the file header. It could be that normal graphics deal with the problem one way, but Blitz's image-loading system deals with it another way.
Whatever the reason, Blitz is actually showing MORE of the picture than your graphics packages are. The extra section at the top proves it wasn't resized, and the gradient of the light in the top-right shows that it wasn't merely copied to increase the size, it's simply showing more of the picture.
Whatever the reason, Blitz is actually showing MORE of the picture than your graphics packages are. The extra section at the top proves it wasn't resized, and the gradient of the light in the top-right shows that it wasn't merely copied to increase the size, it's simply showing more of the picture.