Are the "Runtime Expressions" feature implemented?

Description

I have been following line by line official tutorial about OAS 3.0 Links (https://swagger.io/docs/specification/links/), but it seems to me that "runtime expressions" feature is not implemented yet. Runtime expressions are not updating values or creating links dynamically when I made request to server with implemented logic.

OpenAPI definition

openapi: 3.0.0
info:
  version: 0.0.1
  title: Links example
servers:
- url: http://localhost:8089
  description: "Server"
paths:
  /users:
    post:
      summary: Creates a user and returns the user ID
      operationId: createUser
      requestBody:
        required: true
        description: A JSON object that contains the user name and age.
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/User'
      responses:
        '201':
          description: Created
          content:
            application/json:
              schema:
                type: object
                properties:
                  id:
                    type: integer
                    format: int64
                    description: ID of the created user.
          # -----------------------------------------------------
          # Links
          # -----------------------------------------------------
          links:
            GetUserByUserId:   # <---- arbitrary name for the link
              operationId: getUser
              # or
              # operationRef: '#/paths/~1users~1{userId}/get'
              parameters:
                userId: '$response.body#/id'
              description: >
                The `id` value returned in the response can be used as
                the `userId` parameter in `GET /users/{userId}`.
          # -----------------------------------------------------
  /users/{userId}:
    get:
      summary: Gets a user by ID
      operationId: getUser
      parameters:
        - in: path
          name: userId
          required: true
          schema:
            type: integer
            format: int64
      responses:
        '200':
          description: A User object
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/User'
components:
  schemas:
    User:
      type: object
      properties:
        id:
          type: integer
          format: int64
          readOnly: true
        name:
          type: string

Screenshots

Summary

As you can see, I have performed 2 different request to server, but I cannot see any proper links generated. They exists only in example response section but they are static.
Is there any thing wrong with my code or runtime expressions just do not work?

Start by reproducing the report in Swagger UI with the supplied OpenAPI 3.0 Links definition and the official Runtime Expressions tutorial. Inspect how response links are displayed and whether values are evaluated after the two requests; done means the behavior is either implemented for this example or the unsupported limitation is documented clearly.