Tailwind CSS IntelliSense loses class suggestions in .fluid.html files when extension is active

[nTexx]

Bug report

Description

When vscode-fluid-language is active, Tailwind CSS IntelliSense stops providing class name suggestions in .fluid.html files. Disabling the extension restores the suggestions immediately.

Environment

• TYPO3 (14.3.0)
• @tailwindcss/vite: (4.2.2)
• tailwindcss: (4.2.2)
• vscode-fluid-language: (1.0.2)
• Tailwind CSS IntelliSense: (0.14.29)

Steps to reproduce

1. Install and enable vscode-fluid-language
2. Install and enable Tailwind CSS IntelliSense
3. Add tailwind to your css-file @import 'tailwindcss'
4. Reload window
5. Open a .fluid.html file that contains Tailwind CSS classes
6. Start typing a Tailwind class name inside a class="..." attribute
7. Notice that no suggestions appearExpected: Tailwind CSS IntelliSense provides class name completions, as it does in regular .html files. Actual: No suggestions are shown.

Current Workaround

Disabling vscode-fluid-language and using typo3-fluid-viewhelper-snippets instead restores Tailwind IntelliSense functionality. However, that extension is no longer actively maintained and is expected to be superseded by vscode-fluid-language.