What version of Tailwind CSS are you using?

≈ tailwindcss v4.0.14

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

tailwindcss-rails (4.2.0)

What version of Node.js are you using?

v22.5.1

What browser are you using?

Chrome

What operating system are you using?

macOS

Reproduction URL

Have an application.html.slim with:

  body.border-t-4.p-8(class="#{body_classes}" data-hotwire-native="#{hotwire_native_app?}" data-controller="update-time-zone")

Describe your issue

it doesn't create the p-8 class