298626 2025-09-09 15:36:19 -0700 [css-conditional-5] container-names are tree-scoped 2025-09-16 08:54:12 -0700 1 1 1 Unclassified WebKit CSS WebKit Nightly Build All All RESOLVED FIXED InRadar P2 Normal --- 1 afrehner.work webkit-unassigned afrehner.work koivisto webkit-bug-importer oldest_to_newest 2141987 0 afrehner.work 2025-09-09 15:36:19 -0700 Container queries should resolve against the flat tree in all cases (even when it's a named container query), whereas it was previously ambiguous whether named container queries should or not; however, WPT tests were written so that named container queries were _not_ resolving against the flat tree. In a previous PR https://github.com/WebKit/WebKit/pull/45607 I fixed unnamed container queries resolving against the flat tree, but kept named containers to not resolve against it, because we wanted spec alignment first on that. Now, the spec is aligned. :) Spec update merged here https://github.com/w3c/csswg-drafts/pull/12720 WPTs have already been updated here https://github.com/web-platform-tests/wpt/pull/54612 and here https://github.com/web-platform-tests/wpt/pull/54665 2141988 1 afrehner.work 2025-09-09 15:37:20 -0700 I plan on submitting a PR for this. 2143350 2 ews-feeder 2025-09-16 08:53:40 -0700 Committed 300033@main (efd4ebe98cab): <https://commits.webkit.org/300033@main> Reviewed commits have been landed. Closing PR #50721 and removing active labels. 2143351 3 webkit-bug-importer 2025-09-16 08:54:12 -0700 <rdar://problem/160696378>