icinga2 inputs module not reporting correct state change

[buggsdummy]

Relevant telegraf.conf:

[[inputs.icinga2]]
  ## Required Icinga2 server address (default: "https://localhost:5665")
  server = "https://localhost:5665"
  
  ## Required Icinga2 object type ("services" or "hosts, default "services")
  object_type = "services"

  ## Credentials for basic HTTP authentication
  username = "root"
  password = "abc123"

  ## Maximum time to receive response.
  response_timeout = "5s"

  ## Optional TLS Config
  # tls_ca = "/etc/telegraf/ca.pem"
  # tls_cert = "/etc/telegraf/cert.pem"
  # tls_key = "/etc/telegraf/key.pem"
  ## Use TLS but skip chain & host verification
  insecure_skip_verify = true

System info:

telegraf-1.11.4-1.x86_64

CentOS Linux release 7.6.1810 (Core) 
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

CentOS Linux release 7.6.1810 (Core) 
CentOS Linux release 7.6.1810 (Core) 

icinga2-bin-2.10.5-1.el7.icinga.x86_64
icinga2-common-2.10.5-1.el7.icinga.x86_64
icinga2-selinux-2.10.5-1.el7.icinga.x86_64
vim-icinga2-2.10.5-1.el7.icinga.x86_64
icinga2-ido-pgsql-2.10.5-1.el7.icinga.x86_64
icinga2-2.10.5-1.el7.icinga.x86_64

Steps to reproduce:

1. Check the icinga2 api for a check with a notOK state
   https://localhost:5665/v1/objects/services?filter=service.state!=ServiceOK
2. Check the metrics on icinga2 server
   http://localhost:9126/metrics

Expected behavior:

telegraf should scrape the correct state status and update the metrics

Actual behavior:

state is always ok even after refreshing the metrics page

Additional info:

Metrics

icinga2_services_state_code{check_command="check_app",display_name="check_app",host="localhost",name="check_app",port="5665",scheme="https",source="localhost",state="ok"} 0

Icinga2 API

{
	"results": [{
		"attrs": {
			"__name": "appserver.net!check_app",
			"acknowledgement": 0.0,
			"acknowledgement_expiry": 0.0,
			"action_url": "",
			"active": true,
			"check_attempt": 1.0,
			"check_command": "check_app",
			"check_interval": 300.0,
			"check_period": "",
			"check_timeout": null,
			"command_endpoint": "",
			"display_name": "check_app",
			"downtime_depth": 0.0,
			"enable_active_checks": true,
			"enable_event_handler": true,
			"enable_flapping": false,
			"enable_notifications": true,
			"enable_passive_checks": true,
			"enable_perfdata": true,
			"event_command": "",
			"flapping": false,
			"flapping_current": 0.0,
			"flapping_last_change": 0.0,
			"flapping_threshold": 0.0,
			"flapping_threshold_high": 30.0,
			"flapping_threshold_low": 25.0,
			"force_next_check": false,
			"force_next_notification": false,
			"groups": [],
			"ha_mode": 0.0,
			"host_name": "appserver",
			"icon_image": "",
			"icon_image_alt": "",
			"last_check": 1567093474.6973659992,
			"last_check_result": {
				"active": true,
				"check_source": "icinga2server",
				"command": ["/usr/local/nagios/libexec/check_nrpe", "-H", "appserver", "-c", "check_app"],
				"execution_end": 1567093474.6972908974,
				"execution_start": 1567093474.6051809788,
				"exit_status": 2.0,
				"output": "CRITICAL names",
				"performance_data": [],
				"schedule_end": 1567093474.6973659992,
				"schedule_start": 1567093474.0,
				"state": 2.0,
				"ttl": 0.0,
				"type": "CheckResult",
				"vars_after": {
					"attempt": 1.0,
					"reachable": true,
					"state": 2.0,
					"state_type": 1.0
				},
				"vars_before": {
					"attempt": 1.0,
					"reachable": true,
					"state": 2.0,
					"state_type": 1.0
				}
			},
			"last_hard_state": 2.0,
			"last_hard_state_change": 1566932503.3587920666,
			"last_reachable": true,
			"last_state": 2.0,
			"last_state_change": 1566932444.5251150131,
			"last_state_critical": 1567093474.6973869801,
			"last_state_ok": 0.0,
			"last_state_type": 1.0,
			"last_state_unknown": 0.0,
			"last_state_unreachable": 0.0,
			"last_state_warning": 0.0,
			"max_check_attempts": 3.0,
			"name": "check_app",
			"next_check": 1567093765.1474039555,
			"notes": "",
			"notes_url": "",
			"original_attributes": null,
			"package": "director",
			"paused": false,
			"retry_interval": 60.0,
			"severity": 136.0,
			"source_location": {
				"first_column": 1.0,
				"first_line": 73.0,
				"last_column": 36.0,
				"last_line": 73.0,
				"path": "/var/lib/icinga2/api/packages/director/dbd32fc1-9080-41eb-909b-514a56d190c8/zones.d/master/services.conf"
			},
			"state": 2.0,
			"state_type": 1.0,
			"templates": ["check_app", "check_app"],
			"type": "Service",
			"vars": null,
			"version": 0.0,
			"volatile": false,
			"zone": "master"
		},
		"joins": {},
		"meta": {},
		"name": "appserver!check_app",
		"type": "Service"
	}]
}