Bug 295964

Summary:	[css-anchor-position-1] scrollbars are not handled correctly
Product:	WebKit	Reporter:	fantasai <fantasai.bugs>
Component:	Layout and Rendering	Assignee:	fantasai <fantasai.bugs>
Status:	NEW
Severity:	Normal	CC:	bfulgham, kiet.ho, simon.fraser, webkit-bug-importer, zalan
Priority:	P2	Keywords:	InRadar
Version:	WebKit Local Build
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:
Bug Blocks:	289743, 291856

fantasai

Reported 2025-07-14 23:52:34 PDT

We're not doing the math for scrollbars correctly, which is causing us to fail https://wpt.live/css/css-anchor-position/anchor-position-borders-002.html A variant of the test using position-area fails less badly, only failing in cases with scrollbars on the left side. (It passes in other writing modes.)

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Radar WebKit Bug Importer

Comment 1 2025-07-14 23:52:44 PDT

<rdar://problem/155852237>

fantasai

Comment 2 2025-07-31 12:39:45 PDT

Now that we've integrated PositionedLayoutConstraints into anchor() handling, we're just failing due to the RTL scrollbars.

fantasai

Comment 3 2025-07-31 12:39:55 PDT

Now that we've integrated PositionedLayoutConstraints into anchor() handling, we're just failing due to the RTL scrollbars.

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