VSCode with TypeScript Native Preview does not highlight constants specially

When i switch to TypeScript Native Preview constants in my .ts files are not different from mutable identifiers.

Code is more difficult to read when there are too many mutable and immutable identifiers and they are all with the same color.

I have the last version of Typescript Native Preview vscode extenstion.

I want to know is this problem known or is it of my ide||configuration.

Example Image