OAS 3.0 | Swagger-UI | Required input parameters not getting validated

I downloaded the Swagger-UI 3.X code from https://github.com/swagger-api/swagger-ui as of 10/11/2017.

Q	A
Bug or feature request?	Bug
Which Swagger/OpenAPI version?	Open Api 3.0
Which Swagger-UI version?	swagger-ui, 3.x
How did you install Swagger-UI?	Dowloaded zip, extracted the /dist folder and added my yaml file to it.
Which browser & version?	Chrome Version 61.0.3163.91
Which operating system?	macOS Sierrra

Demonstration API definition

openapi: "3.0.0"

info:
  version: 1.0.0
  title: Example API
  description: A sample API using OpenApi 3.0
  contact:
    name: ABC
    email: [e-mail]

servers:
  - url: http://localhost:8080
    description: Local instance of API

paths:
  /examples/{id}:
    get:
      tags: [examples]
      description: Test path
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
      - name: test
        in: query
        description: test query
        required: false
        schema:
          type: string
          example: test
      responses:
        '200':
          description: test response
          content:
            application/json:
              schema:
                type: string
                example: success

Extracted the dist folder from swagger-UI and added the followingswaggerEx.yaml file to it:

In the index.html folder I made the following change:

  // Build a system
  const ui = SwaggerUIBundle({
    url: "swaggerEx.yaml",
    dom_id: '#swagger-ui',
    deepLinking: true,
    presets: [
      SwaggerUIBundle.presets.apis,
      SwaggerUIStandalonePreset
    ],
    plugins: [
      SwaggerUIBundle.plugins.DownloadUrl
    ],
    layout: "StandaloneLayout"
  })

Expected Behavior

As in swagger 2.0, I expected that the required parameters would be validated such as:

Current Behavior

With the new UI I see that the required parameter validation does not occur and the call keeps loading but never gets executed. Here is a screen shot with that behavior:

Context

We are trying to document our API using Swagger. Right now the documentation part works but if we want to provide user with the ability to try out the API we cannot do that because of this issue.

Thank you.

[nirmalgoswami]

Same issue in openapi 3.0

[karvapallo]

Still seeing this issue using OpenAPI 3.0