See https://github.com/w3c/csswg-drafts/pull/2269 https://github.com/w3c/web-platform-tests/pull/9376 Run test http://w3c-test.org/css/cssom/css-style-attr-decl-block.html Failing test in Safari TP Fail Changes to style attribute should reflect on CSS declaration block assert_equals: CSS declaration block after removing the style attribute expected "" but got "z-index: 21;"
This bug is not reproducible in Safari 14.1.2.