c.f. https://wpt.fyi/results/css/css-break/change-inline-color.html?label=master&product=chrome%5Bexperimental%5D&product=firefox%5Bexperimental%5D&product=safari-164%20preview%5Bexperimental%5D&product=safari-172%20preview&product=safari%5Bstable%5D bisect points at 260603@main On the whole this looks like we maybe just need more fuzziness; seems like things have moved by one or two pixels?
<rdar://problem/110903217>