Opacity variables are supported but not suggested

[Elarcis]

What version of VS Code are you using?

1.108.1 (user setup)

What version of Tailwind CSS IntelliSense are you using?

0.14.29

What version of Tailwind CSS are you using?

4.1.18

What package manager are you using?

npm

What operating system are you using?

Windows 11

Tailwind CSS Stylesheet (v4) or config file (v3)

@import "tailwindcss";

@theme {
  --opacity-half: 50.1%;
}

VS Code settings

Reproduction URL

https://github.com/Elarcis/TailwindCSS-Intellisense-Opacity-Bug

Describe your issue

When using the undocumented --opacity-* namespace, TailwindCSS generates proper CSS classes based on the detected variables and TailwindCSS Intellisense properly assesses what the generated CSS will look like (I used an arbitrarily precise value to avoid any ambiguity).

However, it does not suggest these variables when using the / syntax, e.g. bg-teal-500/half.