295012 2025-06-25 20:30:35 -0700 [css-anchor-position-1] Chained anchors don't scroll with their anchor 2025-07-11 15:29:59 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Local Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 289743 291856 1 fantasai.bugs jbedard bfulgham fantasai.bugs kiet.ho koivisto simon.fraser webkit-bug-importer zalan oldest_to_newest 2125943 0 fantasai.bugs 2025-06-25 20:30:35 -0700 Overview: When a box is anchored to a box which is itself anchored, we scroll adjust the box that is anchored directly to the anchor, but not the one directly anchored. Affected WPT Tests: * http://wpt.live/css/css-anchor-position/anchor-scroll-chained-001.html * http://wpt.live/css/css-anchor-position/anchor-scroll-chained-002.html * http://wpt.live/css/css-anchor-position/anchor-scroll-chained-003.html * http://wpt.live/css/css-anchor-position/anchor-scroll-chained-004.html * http://wpt.live/css/css-anchor-position/anchor-scroll-chained-fallback.html Implementation Notes: We should probably create a map from scroll containers to their scroll-adjusted boxes, which would let the scroll container adjust the affected boxes more directly, without needing to evaluate all the relationships involved. This would both make it easy to handle these cases and also be more performant. 2125944 1 webkit-bug-importer 2025-06-25 20:30:56 -0700 <rdar://problem/154355127> 2128477 2 koivisto 2025-07-08 10:20:50 -0700 Pull request: https://github.com/WebKit/WebKit/pull/47722 2129458 3 ews-feeder 2025-07-11 15:29:56 -0700 Committed 297286@main (6e090026a7cd): <https://commits.webkit.org/297286@main> Reviewed commits have been landed. Closing PR #47722 and removing active labels.