If statements are not correctly parsed

[Spitfire1900]

The attached schema and json, using an if/then statement to enforce a restricted return as a build successful, when in jsonschemalint.com it correctly returns as [2].domain | should be equal to one of the allowed values | "internal.example.com" -- | -- | --

ingest.json

[
	{
		"domain": "example.com",
		"platform": "linux"
	},
	{
		"domain": "example.com",
		"platform": "windows"
	},
	{
		"domain": "internal.example.com",
		"platform": "windows"
	}
]

ingest.schema.json

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "array",
  "minItems": 1,
  "uniqueItems": true,
  "items": {
    "required": ["domain", "platform"],
    "properties": {
      "domain": {
        "enum": ["example.com", "internal.example.com"]
      },
      "platform": {
        "enum": ["linux", "windows" ]
      }
    },
    "if": {
      "properties": {
        "platform": {
          "enum": ["windows"]
        }
      }
    }, "then": {
      "properties": {
        "domain": {
          "enum": ["example.com"]
        }
      }
    }
  }
}

build.gradle

import groovy.json.JsonSlurper

defaultTasks 'groupByPlatform'

buildscript {
  repositories {
    maven {
      url "https://plugins.gradle.org/m2/"
    }
  }
  dependencies {
    classpath "gradle.plugin.cz.alenkacz.gradle:json-validator:1.2.1"
  }
}

apply plugin: "cz.alenkacz.gradle.jsonvalidator"


ext {
  targetJsonFileame = "ingest.json"
  jsonSchemaFilename = "ingest.schema.json"
}

task validateInputJson(type: cz.alenkacz.gradle.jsonvalidator.ValidateJsonTask) {
  description = "Validates JSON input against the JSON schema."
  group = "JSON Parsing"
  targetJsonFile = file(targetJsonFileame)
  jsonSchema = file(jsonSchemaFilename)
}

Output:

gradlew.bat validateInputJson

BUILD SUCCESSFUL in 32s
1 actionable task: 1 executed

gradle --version

X:\Tools\gradlew\gradlew.bat --version

------------------------------------------------------------
Gradle 4.10.2
------------------------------------------------------------

Build time:   2018-09-19 18:10:15 UTC
Revision:     b4d8d5d170bb4ba516e88d7fe5647e2323d791dd

Kotlin DSL:   1.0-rc-6
Kotlin:       1.2.61
Groovy:       2.4.15
Ant:          Apache Ant(TM) version 1.9.11 compiled on March 23 2018
JVM:          1.8.0_151 (Oracle Corporation 25.151-b12)
OS:           Windows 7 6.1 amd64