Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: b26ae83426af2af43b6d8a7744bcd481031f8055
      
https://github.com/WebKit/WebKit/commit/b26ae83426af2af43b6d8a7744bcd481031f8055
  Author: Antoine Quint <[email protected]>
  Date:   2026-09-30 (Wed, 30 Sep 2026)

  Changed paths:
    M Source/WebKit/UIProcess/RemoteLayerTree/RemoteAnimationStack.mm

  Log Message:
  -----------
  [scroll-animations] WPT test 
`scroll-animations/css/animation-inactive-outside-range-test.html` is a flaky 
failure
https://bugs.webkit.org/show_bug.cgi?id=324441
rdar://187682187

Reviewed by Anne van Kesteren.

It appears that setting `0.f` as the value for a `CAPresentationModifier` 
targeting
the `opacity` key path may not correctly reset a previous value on the 
modifier, which
led this test to sometime present green dots (opacity=1) instead of transparent 
dots,
even though all the animation internal states in the remote layer tree were in 
sync
with the scroll position changes.

* Source/WebKit/UIProcess/RemoteLayerTree/RemoteAnimationStack.mm:
(WebKit::RemoteAnimationStack::applyEffects const):

Canonical link: https://commits.webkit.org/322355@main



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