`unmount={false}` breaks first transition in

[aaronadamsCA]

What package within Headless UI are you using?

@headlessui/react

What version of that package are you using?

v2.2.0

What browser are you using?

Chromium v134.0.6998.166

Reproduction URL

https://codesandbox.io/p/devbox/blissful-margulis-pxgf6m

Describe your issue

With unmount={false}, transitioning in doesn't work correctly the first time.

Screen.Recording.2025-04-22.at.13.02.12.mov