Enums being exploded everywhere when openapi version is 3.1.1 (correct in 3.0.0)

Q&A (please complete the following information)

• OS: [e.g. macOS] mac OS
• Browser: [e.g. chrome, safari] chrome
• Version: unsure
• Method of installation: unsure
• Swagger-UI version: unsure
• Swagger/OpenAPI version: unsure

Content & configuration

Example Swagger/OpenAPI definition:

{
  "openapi": "3.1.0",
  "info": {
    "title": "OpenAPI definition",
    "version": "v0"
  },
  "servers": [
    {
      "url": "http://localhost:8080",
      "description": "Generated server url"
    }
  ],
  "paths": {
    "/hello": {
      "get": {
        "tags": [
          "my-controller"
        ],
        "operationId": "hello",
        "parameters": [
          {
            "name": "request",
            "in": "query",
            "required": true,
            "schema": {
              "$ref": "#/components/schemas/RequestWrapper"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "OK",
            "content": {
              "*/*": {
                "schema": {
                  "$ref": "#/components/schemas/Wrapper"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "MyEnum": {
        "type": "string",
        "enum": [
          "FOO",
          "BAR"
        ]
      },
      "RequestWrapper": {
        "type": "object",
        "properties": {
          "enumValue": {
            "$ref": "#/components/schemas/MyEnum"
          }
        }
      },
      "Wrapper": {
        "type": "object",
        "properties": {
          "enumValue": {
            "$ref": "#/components/schemas/MyEnum"
          }
        }
      }
    }
  }
}

I am testing using only https://swagger.io/tools/swagger-editor/ but I have encountered this locally as well.

Describe the bug you're encountering

To reproduce...

Steps to reproduce the behavior:

1. Go to https://editor.swagger.io/
2. Paste in the YAML above
3. Notice that the enum is exploded in all types that have the enum as a field
4. Change OAS version to 3.0.0 and the enum is no longer exploded everywhere but is rather referred to.

Expected behavior

I expected 3.1.0 to behave as well as 3.0.0 in terms of enums.

Screenshots

With 3.1.0

With 3.0.0

Additional context or thoughts

Reproduce the behavior in https://editor.swagger.io/ using the supplied definition, then compare the generated output for OpenAPI 3.1.0 and 3.0.0. Trace the Swagger UI rendering path for schemas referenced by enum-valued fields; done means 3.1.0 preserves the enum reference instead of expanding it in every containing type, with regression coverage for both versions.