Created attachment 379043 [details]
Open the attached test case.
Result: Two rectangles one green and the other is red.
Expected: Two green rectangles.
The test case has a <rect> element with the CSS property fill="red". There is also a <use> element which references the <rect> element. When the document is loaded, the value of CSS property "fill" of the <rect> element is changed to "green". The bug is, the. shadow tree of the <use> element which includes an instances of the <rect> element does not get updated.
We need to call SVGUseElement::invalidateShadowTree() after changing the CSS property the same way we do in SVGElement::svgAttributeChanged().
But this does not work:
rect.style['fill'] = 'green';
Failed WPT test: