Tailwind CSS IntelliSense does not seem to work in a react 19 based project

[Darwinsuuu]

What version of VS Code are you using?
v1.99.3

What version of Tailwind CSS IntelliSense are you using?
v0.14.15

What version of Tailwind CSS are you using?
v4.1.4

What package manager are you using?
npm

What operating system are you using?
Windows

Tailwind config
None

VS Code settings
{
"workbench.colorTheme": "Best Themes - Slime Extra Dark Italic",
"workbench.sideBar.location": "right",
"workbench.activityBar.location": "top",
"files.autoSave": "afterDelay",
"tailwindCSS.experimental.configFile": "src/index.css",
}

Reproduction URL
A public GitHub repo that includes a minimal reproduction of the bug. Please do not link to your actual project, what we need instead is a minimal reproduction in a fresh project without any unnecessary code. This means it doesn't matter if your real project is private/confidential, since we want a link to a separate, isolated reproduction anyways.

Describe your issue

Describe the problem you're seeing, any important steps to reproduce and what behavior you expect instead

IntelliSense is not showing

[Darwinsuuu]

Works now.