I hope the C# extension module can be updated, as it currently does not support C# 14. Thank you.
Hey, thanks for the feature request. This is a known limitation. The bundled language server Roslyn in the C# extension is still behind C# 14, so valid syntax like the extension keyword gets flagged as an error in the editor, even though dotnet build works fine.
We’re already tracking a request to update this, so there’s no need to report it again. I can’t share a timeline for the fix yet. Once we have an update, we’ll post it in the related threads.
If you want, you can follow the main thread where we’ll share progress: