smfr

WebCore contributor

103 commits (6mo)

Summary

smfr works primarily in WebCore rendering and scrolling — scroll snap, scroll anchoring, compositing, and view transitions — with a recurring secondary stream of WPT test resyncs and pixel-tolerance adjustments rather than security or hardening work. The technically notable cluster is cross-process scrolling coordination: a crash in `WebPageProxy::sendScrollUpdateForNode()` under scrolling WPTs and main-thread blocking in `RemoteLayerTreeEventDispatcher::mainThreadDisplayDidRefresh()` both sit on the UI-process/scrolling-thread boundary, where node IDs and layer tree state cross process lines. Where to look next: the scrolling node update path between WebPageProxy and the scrolling thread, especially state churn during relayout and zero-sized or dynamically repadded snap containers.

Components

WebCore

60%

WebKit

16%

Platform

15%

Other

WTF

JSC

Security Fix History

No security fixes recorded

Hardening Commits

No hardening commits recorded

Recent Commits

2026-07-28 [Scroll snap] css/css-scroll-snap/overscroll-snap.html fails in Safari
2026-07-25 Safari main thread can block under RemoteLayerTreeEventDispatcher::mainThreadDisplayDidRefresh()
2026-07-24 [Scroll snap] Fix css/css-scroll-snap/snap-after-relayout/multiple-aligned-targets/prefer-focused-element.html
2026-07-23 Crash under WebPageProxy::sendScrollUpdateForNode() running scrolling-related WPTs
2026-07-21 Resync `/images` from WPT upstream
2026-07-20 [Scroll snap] Page Down skips over snap points
2026-07-19 [WPT] Wheel actions: Follow tick-based event dispatch logic rather than sending scroll events instantaneously
2026-07-19 [Scroll snap] Respect scroll-snap-align for `scrollToAnchor()` and `scrollIntoView()`
2026-07-18 Adjust pixel tolerance in various WPTs
2026-07-17 css/css-masking/clip-path/clip-path-shape-011.html fails
2026-07-16 Resync `css-masking` from WPT upstream
2026-07-16 Resync `css/css-shapes` from WPT upstream
2026-07-14 Resync `css-scroll-snap` from WPT Upstream
2026-07-14 [Scroll anchoring] Scroll jumping on apple.com/retail
2026-07-08 REGRESSION(310012@main): View transitions render darkened content on iOS devices with wide-gamut displays
2026-07-07 [Scroll anchoring] nfl.com scroll position jumps when hovering the top bar (changing scroll-padding)
2026-07-07 REGRESSION (312300@main) Main frame scrollbars to disappear on light-themed pages with dark backgrounds
2026-06-29 Drag image of DOM elements with CSS transforms aren't rendered correctly
2026-06-27 Remove LocalFrameView::m_nodeToDraw
2026-06-27 snap points inside zero-sized elements don't work correctly
2026-06-26 Fix include case in two places
2026-06-23 Sync css/css-backgrounds
2026-06-18 REGRESSION (macOS 26): Horizontal rubber-banding causes trouble with vertical scrolling
2026-06-17 Clean up RenderImage::paintReplaced()
2026-06-16 Add pixel tolerance to a couple of tests
2026-06-15 [macOS x86_64] imported/w3c/web-platform-tests/css/css-images tests are image diff failures
2026-06-15 IMPORT(314164@main): [iOS] imported/w3c/web-platform-tests/css/css-images tests are failing with image diffs
2026-06-15 REGRESSION(6/11/2026)?: [macOS iOS] imported/w3c/web-platform-tests/largest-contentful-paint/image-TAO.sub.html is a fla
2026-06-11 LCP `renderTime` should have 4ms granularity
2026-06-11 Fix null deref in RemoteLayerTreeDrawingAreaProxy::commitLayerTree()
2026-06-10 Resync `largest-contentful-paint` from WPT Upstream
2026-06-09 [iOS] Quirk Scroll Anchoring off on reddit when the Sink It extension is installed
2026-06-06 REGRESSION (314371@main): (macOS) fast/scrolling/Mac tests are flaky failures
2026-06-02 Quip comments panel can be blank when opened sometimes
2026-05-30 REGRESSION (313219@main): Crash when scrolling arstechnica article
2026-05-30 Occasional crash in RemoteLayerTreeDrawingAreaProxy::commitLayerTreeTransaction()
2026-05-29 passive:false wheel event listener and overscroll-behavior: contain prevent scrolling
2026-05-28 Dots for photo galleries on lemonde.fr repaint incorrectly with zoom
2026-05-27 Zooming with scroll snap can trigger infinite recursion
2026-05-27 Add `--list-tests` as a synonym for `--dump` in `run-api-tests`
2026-05-21 Pan gestures pass through scroll containers laid over vertical-rl body text (but only once the document's scrollingEleme
2026-05-20 [iOS] RTL/position fixed element can lose its contents when the document is scrolled
2026-05-19 swift.org shows a black region on its right when the Safari sidebar is open on the left
2026-05-17 CSS style 'filter: drop-shadow...' does not render correctly without repaint.
2026-05-16 Safari can hang under RemoteScrollingCoordinatorProxyMac::displayDidRefresh() sometimes
2026-05-15 REGRESSION (296844@main): drop-shadow and translation transforms render incorrectly clipped
2026-05-14 REGRESSION (303819@main): Child with filter:blur() ignores border radius overflow clipping
2026-05-14 Convert LayerRepresentation to use a variant
2026-05-09 WKCompositingLayer leaks
2026-05-07 Code cleanup around traverseVisibleNonCompositedDescendantLayers after 312702@main
2026-05-06 REGRESSION (308320@main): x.com jumps to the wrong scroll offset when navigating back from a thread
2026-05-06 [HDR] Some HDR images on gregbenzphotography.com page flicker to SDR when hovered
2026-05-04 Smooth scroll in viewport with scroll-snap fails on iOS
2026-05-04 REGRESSION (303819@main): Child with filter:blur() ignores border radius overflow clipping
2026-05-04 [Build speed] Reduce the cost of Debugger.h
2026-05-03 Various build speed improvements
2026-05-02 Add a release log listing settings which have non-default values
2026-05-01 [iOS] Restored scroll position is incorrect
2026-04-30 LCP buffer size seems to be set to 1 instead of 150
2026-04-30 [iOS] Improve scroll position preservation on rotation in RTL pages
2026-04-30 Remove LocalFrameView::updateScrollingCoordinatorScrollSnapProperties() which is dead code
2026-04-28 Occasional flicker of bad layer offsets when positions are adjusted by scroll anchoring (or other programmatic scrolling
2026-04-26 Resync `css/css-scroll-snap` from from WPT Upstream
2026-04-24 Tests that try to simulate `wheel` events on iOS hit an assertion
2026-04-23 [Scroll snap] Do some minor cleanup around updateSnapOffsetsForScrollableArea
2026-04-23 Avoid updating UI-side layer positions for no-op transactions
2026-04-22 CheckedPtr crash in WebScrollbarPartAnimationMac
2026-04-21 Some filters tests call `setAcceleratedCompositingEnabled(false)` which is no longer a valid configuration
2026-04-21 [Scroll anchoring] Scroll anchoring interferes with rubberbanding on bbc.com pages
2026-04-21 [iOS] nfl.com rubberbanding behaves incorrectly
2026-04-18 Tabbing in a scroll container with scroll-padding set does not scroll focused element into view
2026-04-18 [WPT] reftest variants not obeyed
2026-04-16 Migrate away from UIApplication.sharedApplication.statusBarFrame in WebKitTestRunner
2026-04-15 [Scroll anchoring] Transform changes fail to suppress anchoring sometimes
2026-04-10 Unreviewed, fix the unified source build after 310870@main
2026-04-10 Variant WPT with a slash in the params cause a failure
2026-04-09 Composited layers flash blank when window.scrollTo() is called synchronously with a DOM layout change on iOS
2026-04-07 scrollIntoView on an overflow scroller scrolls its contents
2026-04-04 LCP in shadow DOM is not reported
2026-04-04 [Scroll anchoring] learn.umgc.edu: scrolls to the bottom/top automatically
2026-04-04 Move scroll-anchoring tests into a directory
2026-04-04 [Scroll anchoring] Add a heuristic that disables scroll anchoring for frequent adjustments
2026-04-04 Have filter-build-webkit highlight lines containing "error:"
2026-04-03 Fix the build after 310527@main
2026-03-30 Simplify applyScrollingTreeLayerPositionsAfterCommit() code
2026-03-30 Optimize RemoteScrollingCoordinatorProxy::commitScrollingTreeState slightly
2026-03-29 Cannot set scrollTop during momentum scroll phase
2026-03-27 [Scroll anchoring] Flip state back to `stable`
2026-03-11 REGRESSION(294844@main): svg/filters/feTile.svg is broken
2026-03-11 Make EnumSet TextStream-loggable
2026-03-10 Pages using the Navigation API sometimes have offset hit test locations
2026-03-09 Remove the unused NonInheritedRareData::usesTreeCountingFunctions
2026-03-09 [Scroll anchoring] css/css-scroll-anchoring/position-change-heuristic.html is flaky
2026-03-08 [Scroll anchoring] Fix anchoring in different writing modes
2026-03-07 fast/css/vertical-text-overflow-ellipsis-text-align-center-mixed.html is flaky recently
2026-03-06 [Scroll anchoring] Avoid no-op adjustments due to rounding
2026-03-06 [Scroll anchoring] Flip state back to `preview`
2026-03-05 fast/css/vertical-text-overflow-ellipsis-text-align-center-mixed.html is flaky recently
2026-03-03 REGRESSION(307744@main): [iOS debug] css3/filters/effect-drop-shadow.html is a constant crash
2026-03-01 InheritedRareData.colorSpace is unused
2026-03-01 [Scroll snap] YouTube shorts scroll to the next video and back
2026-03-01 Make a scope type to set/restore currentScrollType
2026-02-28 REGRESSION(308215@main?): [macOS] TestWebKitAPI.ScrollingCoordinatorTests.ScrollingTreeAfterDetachReattach is a flaky ti

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