Bug 270664

Summary:	@font-face rules in shadow trees should not leak outside to document
Product:	WebKit	Reporter:	Alan Stearns <stearns>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	NEW
Severity:	Normal	CC:	fantasai.bugs, koivisto, m_dubet, rniwa, vitor.roriz, webkit-bug-importer, woodlxf00
Priority:	P2	Keywords:	InRadar
Version:	Safari 17
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:
Bug Blocks:	148695

Alan Stearns

Reported 2024-03-07 15:00:26 PST

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.

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Radar WebKit Bug Importer

Comment 1 2024-03-14 16:01:23 PDT

<rdar://problem/124643482>

Matthieu Dubet

Comment 2 2024-03-20 10:48:11 PDT

Hi Alan, Thank you very much for the detailed bug report, we will look into it.

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