Bug 139282

Open the following svg in WebKit: <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <defs> <image id="MyImage" width="10" height="10" xlink:href="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAAXNSR0IArs4c6QAAADdJREFUGNNjZGD4/5+BCMDCwMDAwNDQiF9VQz0DEwORgPoKGRkY/v9fe+M5XkXBGpID7kZiFAIAEbULDl5w/68AAAAASUVORK5CYII="/> <filter id="noop" x="0%" y="0%" width="100%" height="100%"> <feConvolveMatrix order="1" kernelMatrix="1"/> </filter> </defs> <g transform="translate(10, 10)"> <use x="0" y="0" xlink:href="#MyImage" /> <use x="20" y="0" xlink:href="#MyImage"> <filter id="noop" x="0%" y="0%" width="100%" height="100%"> <feConvolveMatrix order="1" kernelMatrix="1"/> </filter> </use> <g filter="url(#noop)"> <use x="40" y="0" xlink:href="#MyImage" /> </g> </g> </svg> Result: The last image looks different from the first two images. Expected: The three images should look exactly the same. The first image is the row image. The second image has a convolution matrix filter with no-opertaion matrix so the image should not be affected by this filter. The third image has the same filter but it references it from the <defs> section. So It should look the same as the first two but it does not.