$ref inside property missing

I have 2 components:

1. ErrorArrayResponse with property errors which is an array of ApiResponseError
2. ApiResponseError with 2 string properties, errorType and message.

The problem is that after parsing, ErrorArrayResponse shows errors as array, but without information that it is array of ApiResponseError. The $ref element after parsing is null.

I'm using io.swagger.parser.v3:swagger-parser:2.1.2

api-docs.json

{
  "openapi": "3.0.1",
  "info": {
    "title": "OpenAPI definition",
    "version": "v0"
  },
  "servers": [],
  "security": [],
  "paths": {},
  "components": {
    "schemas": {
      "ApiResponseError": {
        "type": "object",
        "properties": {
          "errorType": {
            "type": "string"
          },
          "message": {
            "type": "string"
          }
        }
      },
      "ErrorArrayResponse": {
        "required": [
          "errors"
        ],
        "type": "object",
        "properties": {
          "errors": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/ApiResponseError"
            }
          }
        }
      }
    },
    "securitySchemes": {}
  }
}

code to execute (kotlin)

    val result = OpenAPIParser().readLocation("api-docs.json", null, null)
    val openApi = result.openAPI
    println(openApi.components)

Debug output

14:30:01.966 [main] DEBUG io.swagger.v3.parser.OpenAPIV3Parser - Loaded raw data: {
  "openapi": "3.0.1",
  "info": {
    "title": "OpenAPI definition",
    "version": "v0"
  },
  "servers": [],
  "security": [],
  "paths": {},
  "components": {
    "schemas": {
      "ApiResponseError": {
        "type": "object",
        "properties": {
          "errorType": {
            "type": "string"
          },
          "message": {
            "type": "string"
          }
        }
      },
      "ErrorArrayResponse": {
        "required": [
          "errors"
        ],
        "type": "object",
        "properties": {
          "errors": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/ApiResponseError"
            }
          }
        }
      }
    },
    "securitySchemes": {}
  }
}

print components output

class Components {
    schemas: {ApiResponseError=class ObjectSchema {
        class Schema {
            type: object
            format: null
            $ref: null
            description: null
            title: null
            multipleOf: null
            maximum: null
            exclusiveMaximum: null
            minimum: null
            exclusiveMinimum: null
            maxLength: null
            minLength: null
            pattern: null
            maxItems: null
            minItems: null
            uniqueItems: null
            maxProperties: null
            minProperties: null
            required: null
            not: null
            properties: {errorType=class StringSchema {
                class Schema {
                    type: string
                    format: null
                    $ref: null
                    description: null
                    title: null
                    multipleOf: null
                    maximum: null
                    exclusiveMaximum: null
                    minimum: null
                    exclusiveMinimum: null
                    maxLength: null
                    minLength: null
                    pattern: null
                    maxItems: null
                    minItems: null
                    uniqueItems: null
                    maxProperties: null
                    minProperties: null
                    required: null
                    not: null
                    properties: null
                    additionalProperties: null
                    nullable: null
                    readOnly: null
                    writeOnly: null
                    example: null
                    externalDocs: null
                    deprecated: null
                    discriminator: null
                    xml: null
                }
            }, message=class StringSchema {
                class Schema {
                    type: string
                    format: null
                    $ref: null
                    description: null
                    title: null
                    multipleOf: null
                    maximum: null
                    exclusiveMaximum: null
                    minimum: null
                    exclusiveMinimum: null
                    maxLength: null
                    minLength: null
                    pattern: null
                    maxItems: null
                    minItems: null
                    uniqueItems: null
                    maxProperties: null
                    minProperties: null
                    required: null
                    not: null
                    properties: null
                    additionalProperties: null
                    nullable: null
                    readOnly: null
                    writeOnly: null
                    example: null
                    externalDocs: null
                    deprecated: null
                    discriminator: null
                    xml: null
                }
            }}
            additionalProperties: null
            nullable: null
            readOnly: null
            writeOnly: null
            example: null
            externalDocs: null
            deprecated: null
            discriminator: null
            xml: null
        }
    }, ErrorArrayResponse=class ObjectSchema {
        class Schema {
            type: object
            format: null
            $ref: null
            description: null
            title: null
            multipleOf: null
            maximum: null
            exclusiveMaximum: null
            minimum: null
            exclusiveMinimum: null
            maxLength: null
            minLength: null
            pattern: null
            maxItems: null
            minItems: null
            uniqueItems: null
            maxProperties: null
            minProperties: null
            required: [errors]
            not: null
            properties: {errors=class ArraySchema {
                class Schema {
                    type: array
                    format: null
                    $ref: null
                    description: null
                    title: null
                    multipleOf: null
                    maximum: null
                    exclusiveMaximum: null
                    minimum: null
                    exclusiveMinimum: null
                    maxLength: null
                    minLength: null
                    pattern: null
                    maxItems: null
                    minItems: null
                    uniqueItems: null
                    maxProperties: null
                    minProperties: null
                    required: null
                    not: null
                    properties: null
                    additionalProperties: null
                    nullable: null
                    readOnly: null
                    writeOnly: null
                    example: null
                    externalDocs: null
                    deprecated: null
                    discriminator: null
                    xml: null
                }
            }}
            additionalProperties: null
            nullable: null
            readOnly: null
            writeOnly: null
            example: null
            externalDocs: null
            deprecated: null
            discriminator: null
            xml: null
        }
    }}
    responses: null
    parameters: null
    examples: null
    requestBodies: null
    headers: null
    securitySchemes: {}
    links: null
    callbacks: null
    pathItems: null
}

Swagger UI is showing ErrorArrayResonse with erorrs as array of ApiResponseError:

The reproduction enters through OpenAPIParser().readLocation using api-docs.json, with parsing handled by OpenAPIV3Parser; begin there and trace resolution of the array item's $ref. Reproduce the missing ApiResponseError reference and add a regression check showing that ErrorArrayResponse.errors retains that schema reference.