EventRule bug CloudFormation script

stack.json

{
	"AWSTemplateFormatVersion": "2010-09-09",
	"Parameters": {
		"FunctionName": {
			"Type": "String",
			"Default": "testcase"
		},
		"RoleName": {
			"Type": "String",
			"Default": "ApplicationRoleFor_testcase"
		},
		"PolicyName": {
			"Type": "String",
			"Default": "ApplicationPolicyFor_testcase"
		},
		"RuleName": {
			"Type": "String",
			"Default": "testcase_every-hour"
		}
	},
	"Resources": {
		"LambdaFunction": {
			"Type": "AWS::Lambda::Function",
			"DependsOn": "Role",
			"Properties": {
				"Code": {
					"ZipFile": "exports.handler = (event, context, callback) => callback(undefined, 'all ok');"
				},
				"FunctionName": { "Ref": "FunctionName" },
				"Handler": "index.handler",
				"Role": { "Fn::GetAtt" : [ "Role", "Arn" ] },
				"Runtime": "nodejs4.3"
			}
		},
		"Role": {
			"Type": "AWS::IAM::Role",
			"Properties": {
				"AssumeRolePolicyDocument": {
					"Version": "2012-10-17",
					"Statement": [
						{
							"Effect": "Allow",
							"Principal": {
								"Service": "lambda.amazonaws.com"
							},
							"Action": "sts:AssumeRole"
						}
					]
				}
			}
		},
		"Policy": {
			"Type": "AWS::IAM::Policy",
			"DependsOn": "Role",
			"Properties": {
				"PolicyDocument": {
					"Version": "2012-10-17",
					"Statement": [
						{
							"Effect": "Allow",
							"Action": "lambda:InvokeFunction",
							"Resource": { "Fn::Join": [ "", [ "arn:aws:lambda:", { "Ref" : "AWS::Region" }, ":", { "Ref" : "AWS::AccountId" }, ":function:", { "Ref": "FunctionName" } ] ] }
						},
						{
							"Effect": "Allow",
							"Action": [
								"logs:CreateLogGroup",
								"logs:CreateLogStream",
								"logs:DescribeLogGroups",
								"logs:DescribeLogStreams",
								"logs:FilterLogEvents",
								"logs:GetLogEvents",
								"logs:PutLogEvents"
							],
							"Resource": "*"
						}
					]
				},
				"Roles": [ { "Ref" : "Role" } ],
				"PolicyName": { "Ref": "PolicyName" }
			}
		},
		"Rule": {
			"Type": "AWS::Events::Rule",
			"DependsOn": "LambdaFunction",
			"Properties": {
				"Name": { "Ref": "RuleName" },
				"ScheduleExpression": "cron(0 * * * ? *)",
				"State": "ENABLED",
				"Targets": [
					{
						"Arn": { "Fn::GetAtt" : [ "LambdaFunction", "Arn" ] },
						"Id": "ScheduledRuleTarget"
					}
				]
			}
		}
	}
}