Bug 289578

Summary:

[css-anchor-position-1] Adjust anchor()/anchor-size() for viewport and CSS zoom

Product:

WebKit

Reporter:

Kiet Ho <kiet.ho>

Component:

Layout and Rendering

Assignee:

Kiet Ho <kiet.ho>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

bfulgham, kiet.ho, simon.fraser, webkit-bug-importer, zalan

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

Attachments:

Description	Flags
Reproduction	none
Screenshot (Chrome on left, Safari on right)	none

Kiet Ho

Reported 2025-03-11 16:53:13 PDT

Created attachment 474528 [details] Reproduction Google Chrome 136.0.7062.3 (Official Build) canary (arm64) WebKit 291786@main Steps to reproduce: * Load the attached repro * Zoom to 150% * Observe that the orange box gets positioned further and further away from the anchor with each zoom level.

Attachments
Reproduction (907 bytes, text/html) 2025-03-11 16:53 PDT, Kiet Ho	no flags	Details
Screenshot (Chrome on left, Safari on right) (251.20 KB, image/png) 2025-03-11 16:55 PDT, Kiet Ho	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Radar WebKit Bug Importer

Comment 1 2025-03-11 16:53:25 PDT

<rdar://problem/146806814>

Kiet Ho

Comment 2 2025-03-11 16:55:01 PDT

Created attachment 474529 [details] Screenshot (Chrome on left, Safari on right)

Kiet Ho

Comment 3 2025-03-22 01:11:21 PDT

Pull request: https://github.com/WebKit/WebKit/pull/42874

EWS

Comment 4 2025-03-31 18:39:35 PDT

Committed 292985@main (27cdd2696cac): <https://commits.webkit.org/292985@main> Reviewed commits have been landed. Closing PR #42874 and removing active labels.

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