Tailwind vite plugin forces full reload for server only modules managed by SSR frameworks

[hi-ogawa]

What version of Tailwind CSS are you using?

For example: v4.2.1

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

For example: Vite 7.3.1. React-router 7.13.1

What version of Node.js are you using?

For example: Stackblitz

What browser are you using?

For example: Chrome

What operating system are you using?

For example: Stackblitz

Reproduction URL

https://stackblitz.com/edit/github-rzxamhar?file=app%2Froutes%2Fhome.tsx

(Created based on official template https://github.com/remix-run/react-router-templates/tree/main/minimal)

Describe your issue

Reproduction steps:

• Open stackblitz (or download locally)
• Run pnpm dev
• Input value in test-state input
• Modify app/hdr-dep.ts
• Observe input value is lost due to full reload instead of server hmr (aka HDR)

Similar regression is observed in @vitejs/plugin-rsc test suite and tracked in

• HMR not working with tailwind 4.2.0 vitejs/vite-plugin-react#1118