CSS selector mangled when using Tailwind + Turbopack

[Almamu]

Link to the code that reproduces this issue

https://github.com/Almamu/alignui-nextjs-turbopack-issue

To Reproduce

1. Start the application in development
2. Open the site in a browser
3. The error should be present right away

Current vs. Expected behavior

The app should compile and not show any error.

Provide environment information

Operating System:
  Platform: linux
  Arch: x64
  Version: #1 SMP PREEMPT_DYNAMIC Sun, 20 Apr 2025 12:38:52 +0000
  Available memory (MB): 64217
  Available CPU cores: 24
Binaries:
  Node: 23.9.0
  npm: 11.3.0
  Yarn: 1.22.22
  pnpm: 10.10.0
Relevant Packages:
  next: 15.4.0-canary.26 // Latest available version is detected (15.4.0-canary.26).
  eslint-config-next: N/A
  react: 19.1.0
  react-dom: 19.1.0
  typescript: 5.8.3
Next.js Config:
  output: N/A

Which area(s) are affected? (Select all that apply)

CSS, Turbopack

Which stage(s) are affected? (Select all that apply)

next dev (local)

Additional context

The app works as-is just by removing --turbopack from the dev command. The issue seems to be caused by some of the hover properties in the file components/ui/input.tsx. This is an AlignUI component that uses radix-ui behind the scenes. Looking at the error looks like something is "escaping" a bit too much of the content maybe? I might be able to debug this a bit further given some pointers on how to look at the code generated and where it's generated from.