Browser support?
Motion supports all modern browsers. It doesn't support Internet Explorer 11 or below.
Why is my animation finishing instantly?
There are a couple reasons an animation might appear to finish instantly.
1. Your browser doesn't support CSS.registerProperty
If you're animating CSS variables and your browser doesn't support the CSS Properties and Values API, animations will finish instantly.
There's a bug in older versions of Safari where animating to scale(0) completes instantly.