Re: [csswg-drafts] [css-anchor-position-1] Should `anchor-scope` be animatable? (#11739)

`timeline-scope` is not animatable because the resulting value could change itself or other running animations in a way that would require re-running the lifecycle.

Despite being inspired by `timeline-scope`, `anchor-scope` is not an animation affecting property, so it should be fine to be discretely animatable. This allows developers to do interesting things like change the anchor-scope at a certain point in an animation.

In general, we should only make properties not animateable if animating them would cause a cycle in the animation state (i.e. only properties used to determine the state of an animation).

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Received on Tuesday, 18 February 2025 18:52:08 UTC