[Webkit-unassigned] [Bug 215945] New: [GTK][WPE] webanimations/accelerated-css-animation-with-easing.html is image failing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=215945

            Bug ID: 215945
           Summary: [GTK][WPE]
                    webanimations/accelerated-css-animation-with-easing.ht
                    ml is image failing
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WPE WebKit
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: lmoura at igalia.com
                CC: bugs-noreply at webkitgtk.org

webanimations/accelerated-css-animation-with-easing.html

r266241 added a test for a regression from r263506 regarding keyframes with explicit timing functions interfering with implicit timing functions of other keyframes.

The red div (implicit timing function) must not be uncovered by the green div (with the explicit 'ease' timing function in a tiny keyframe interval).

Running the test on MiniBrowser indeed the green div ends up using it the 'ease' timing function for the entire duration of its animation, leading to the red div to appear.

Epiphany (WebKitGTK 2.28.4, without r263506) behaves correctly, like Chrome (84) and Firefox (80).

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