[BUG] Elements do not animate in latest React 19 canaries

[ZipBrandon]

1. Read the FAQs 👇

2. Describe the bug

Elements won't animate off their initial props since 19.0.0-canary-7a2609eed-20240403.

19.0.0-canary-48ec17b86-20240402 does work.

3. IMPORTANT: Provide a CodeSandbox reproduction of the bug

https://github.com/ZipBrandon/framer-motion-initial-bug

4. Steps to reproduce

Steps to reproduce the behavior:

1. git clone https://github.com/ZipBrandon/framer-motion-initial-bug && cd framer-motion-initial-bug && npm i && npm run dev
2. See that the Test and Testing elements animate properly.
3. Click the button to add a new element and see that it does not animate.

5. Expected behavior

Animations to work.

[mattgperry]

Thanks - we'll keep an eye on the situation but we're not going to spend any time on fixing issues in canaries/betas as the bugs are more potentially on their side

[ZipBrandon]

I understand. I do want to link radix-ui/primitives#2811 since the ref did come to play over there.

[o-alexandrov]

React 19 has a blog post yesterday: react 19 enters beta.

This beta release is for libraries to prepare for React 19.