Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: a1352e0bb8d4f6b7792ebf7de283b9ab3ac59f0d
https://github.com/WebKit/WebKit/commit/a1352e0bb8d4f6b7792ebf7de283b9ab3ac59f0d
Author: Ahmad Saleem <[email protected]>
Date: 2026-08-14 (Fri, 14 Aug 2026)
Changed paths:
M LayoutTests/TestExpectations
M Source/WebCore/dom/Element.cpp
Log Message:
-----------
[css-contain] element.scroll()/scrollTo() does not scroll inside a
content-visibility: hidden subtree
https://bugs.webkit.org/show_bug.cgi?id=321800
rdar://184935071
Reviewed by Simon Fraser.
This patch aligns WebKit with Gecko / Firefox and Blink / Chromium.
Element::scrollTo() was the only scroll-related entry point that did not ask
layout to descend into a content-visibility skipped subtree; scrollLeft/
scrollTop, their setters, scrollWidth/scrollHeight and the client/offset/
getBoundingClientRect family all already do.
Without those options Document::updateLayout() skips
runForcedLayoutOnSkippedContentIfNeeded(), so the target is never laid out and
setScrollPosition() clamps to 0 against a zero-sized scrollable area. Affects
element.scroll(), scrollTo() and scrollBy(), which share this overload.
* LayoutTests/TestExpectations: Unskip now passing test
* Source/WebCore/dom/Element.cpp:
(WebCore::Element::scrollTo):
Canonical link: https://commits.webkit.org/319219@main
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