No syntax color after using a null conditional on a Parameter attribute in Blazor

[ParkerRedford]

I think this is the right place for my issue. After [Parameter] public, there is no color syntax. This only applies if there is a null conditional.

Also, the class identifier is not highlighted;

I am using Visual Studio Code and using .NET 7

[JoeRobich]

This should be resolved with this C# extension change dotnet/vscode-csharp#6489.