Version

3.0.0-rc.10

Reproduction link

https://codepen.io/Paavo/pen/zYqpPpr

Steps to reproduce

Store a GSAP .timeline() object in data and try to use the "to" function.

What is expected?

The Animation should work

What is actually happening?

nothing.

The animation objects that you get with .getChildren() seem to be proxied too.

Use markRaw():

this.tl = Vue.markRaw(gsap.timeline({ paused: true }));

Or do not declare tl in data so it's not reactive