[BUG] useSpring not considered an animation & animationComplete not triggered

[piotrblasiak]

1. Read the FAQs 👇

2. Describe the bug

When using useSpring with set(), one expects like the docs say that this will start an animation. When the change event is triggered, mySpring.isAnimating() returns false, and no animationComplete event is ever triggered.

3. IMPORTANT: Provide a CodeSandbox reproduction of the bug

https://codesandbox.io/p/sandbox/9vjzhg?file=%2Fsrc%2FApp.js%3A12%2C1

4. Steps to reproduce

Steps to reproduce the behavior:

Open the console and press the button.

5. Expected behavior

Motion value should be marked as animating and animationComplete should be triggered.

6. Video or screenshots

Screen.Recording.2024-12-23.at.10.34.00.mov