I pushed a minimum reproducible demo

When the order of semantic tokens provided by the language server is inconsistent with the order in the document character stream, non-ascending semantic tokens will not be highlighted. This will not be the case when using language clients based on the VS Code API, and highlighting will not be affected by token order.

Phenomenon:

The code for providing semantic tokens between the language server and the client is almost exactly the same.

doubt:

No requirement for the order of semantic tokens was found in the LSP documentation.
Is this a requirement for LSP? Or is it a bug in the vscode-languageserver/node npm package?