keyframes from animations with var missing from v2.2.0

[hug963]

What version of Tailwind CSS are you using?

2.2.2

What build tool (or framework if it abstracts the build tool) are you using?

Next.js 11.0.0

What version of Node.js are you using?

v14.17.0

What browser are you using?

Chrome

What operating system are you using?

macOS

Reproduction repository

https://play.tailwindcss.com/cF9YjsPwu9

Describe your issue

Since v2.2.0, keyframes from animations with a var() in the definition are missing.
The animation is there, only the keyframes are missing.

From the example on Tailwind Play, the first logo only moves when switching back to v1.9.6 but doesn't in the latest version.

It is working fine on v2.1.4

[adamwathan]

Hey! This is fixed in 2.2.16 tagged this morning 👍🏻

#5602

Thanks 🍻