Bug 186972

Summary:	CSS.supports() applies quirks mode parsing
Product:	WebKit	Reporter:	Simon Pieters (:zcorpan) <zcorpan>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	ahmad.saleem792, bfulgham, bramus, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Safari Technology Preview
Hardware:	Unspecified
OS:	Unspecified

Description Simon Pieters (:zcorpan) 2018-06-23 08:15:54 PDT

https://wpt.fyi/results/quirks/supports.html

https://quirks.spec.whatwg.org/#the-hashless-hex-color-quirk
https://quirks.spec.whatwg.org/#the-unitless-length-quirk

Comment 1 Brent Fulgham 2022-07-15 13:27:01 PDT

This continues to be an issue in Safari 15.5+

Comment 2 Radar WebKit Bug Importer 2022-07-15 13:27:12 PDT

<rdar://problem/97090919>

Comment 3 Ahmad Saleem 2023-07-13 16:37:38 PDT

Passing all tests now in STP173.

https://wpt.fyi/results/quirks/supports.html?label=experimental&label=master&aligned=

I think "Anne" landed last part to fix this in following.

https://github.com/WebKit/WebKit/commit/a21e36ac280d7e9918b0fa43094bbf37da3c01d9

*** This bug has been marked as a duplicate of bug 257643 ***