270664 2024-03-07 15:00:26 -0800 @font-face rules in shadow trees should not leak outside to document 2026-01-28 17:02:14 -0800 1 1 1 Unclassified WebKit CSS Safari 17 Unspecified Unspecified NEW InRadar P2 Normal --- 148695 1 stearns webkit-unassigned ahmad.saleem792 fantasai.bugs koivisto m_dubet rniwa vitor.roriz webkit-bug-importer woodlxf00 oldest_to_newest 2019472 0 stearns 2024-03-07 15:00:26 -0800 I have a PR up at WPT with a bunch of tests around @font-face and shadow trees: https://github.com/web-platform-tests/wpt/pull/44993 These are based on the spec (https://drafts.csswg.org/css-scoping/#shadow-names) which WebKit gets right much more than the other engines (all but two of the tests pass) but @font-face names are meant to be tree-scoped, which WebKit does not do. So the two tests (001 and 005) that check that a @font-face rule defined in a shadow tree does not get used when referred to by the outside document fail in WebKit. 2021165 1 webkit-bug-importer 2024-03-14 16:01:23 -0700 <rdar://problem/124643482> 2022490 2 m_dubet 2024-03-20 10:48:11 -0700 Hi Alan, Thank you very much for the detailed bug report, we will look into it. 2176018 3 ahmad.saleem792 2026-01-28 17:02:14 -0800 I tried to look for tests in css-scoping but couldn't find, are they changed to this? https://wpt.fyi/results/css/css-shadow?label=master&label=experimental&aligned&q=font-face%20safari%3Afail Haven't done git blame etc on WPT yet but just thought to check.