The :scope selector is defined to match the @scope rule’s scoping root. https://drafts.csswg.org/css-cascade-6/#scope-effects
<rdar://problem/118748899>
Pull request: https://github.com/WebKit/WebKit/pull/21102
Committed 271508@main (0bc5d3ab9236): <https://commits.webkit.org/271508@main> Reviewed commits have been landed. Closing PR #21102 and removing active labels.