The following tests fail on GTK after r230000: [Web Animations] Stop using internals.pauseAnimationAtTimeOnElement() in favor of Web Animations API for animations tests https://bugs.webkit.org/show_bug.cgi?id=184038 animations/animation-direction-normal.html animations/animation-direction-reverse.html animations/change-keyframes.html animations/play-state-in-shorthand.html animations/transform-non-accelerated.html Maybe it's a Web Animations bug in GTK?
animations/animation-iteration-event-destroy-renderer.html started timing out at the same time, likely related.
animations/change-keyframes.html is now passing since r233512
(In reply to Alicia Boya García from comment #1) > animations/animation-iteration-event-destroy-renderer.html started timing > out at the same time, likely related. This is passing now.
All of the failing tests are passing since r236541