Cluster API Provider Multi-machine actuator issue

cluster-api-provider log

$ kubectl logs -f -n cluster-api-provider-talos-system cluster-api-provider-talos-controller-manager-0
{"level":"info","ts":1557246922.364505,"logger":"talos-controller-manager.entrypoint","msg":"Adding machine actuator:","provisioner":{"Provisioner":{},"Clientset":{"LegacyPrefix":"/api"}}}
{"level":"info","ts":1557246922.3647182,"logger":"kubebuilder.controller","msg":"Starting EventSource","controller":"machine-controller","source":"kind source: /, Kind="}
{"level":"info","ts":1557246922.365611,"logger":"talos-controller-manager.entrypoint","msg":"Adding machine actuator:","provisioner":{"Provisioner":{},"Clientset":{"LegacyPrefix":"/api"}}}
{"level":"info","ts":1557246922.3657587,"logger":"kubebuilder.controller","msg":"Starting EventSource","controller":"machine-controller","source":"kind source: /, Kind="}
{"level":"info","ts":1557246922.365843,"logger":"kubebuilder.controller","msg":"Starting EventSource","controller":"cluster-controller","source":"kind source: /, Kind="}
{"level":"info","ts":1557246922.4851756,"logger":"kubebuilder.controller","msg":"Starting Controller","controller":"cluster-controller"}
{"level":"info","ts":1557246922.48532,"logger":"kubebuilder.controller","msg":"Starting Controller","controller":"machine-controller"}
{"level":"info","ts":1557246922.485318,"logger":"kubebuilder.controller","msg":"Starting Controller","controller":"machine-controller"}
{"level":"info","ts":1557246922.5854,"logger":"kubebuilder.controller","msg":"Starting workers","controller":"cluster-controller","worker count":1}
{"level":"info","ts":1557246922.5853996,"logger":"kubebuilder.controller","msg":"Starting workers","controller":"machine-controller","worker count":1}
{"level":"info","ts":1557246922.5854905,"logger":"kubebuilder.controller","msg":"Starting workers","controller":"machine-controller","worker count":1}
I0507 16:35:48.986154       1 controller.go:89] Running reconcile Cluster for talos-test-cluster
I0507 16:35:48.999655       1 controller.go:89] Running reconcile Cluster for talos-test-cluster
I0507 16:35:48.999691       1 controller.go:127] reconciling cluster object talos-test-cluster triggers idempotent reconcile.
I0507 16:35:57.886192       1 controller.go:113] Reconciling Machine "talos-test-cluster-master-1"
I0507 16:35:57.886237       1 controller.go:113] Reconciling Machine "talos-test-cluster-master-1"
I0507 16:35:57.897714       1 controller.go:113] Reconciling Machine "talos-test-cluster-master-1"
2019/05/07 16:35:57 Checking if machine talos-test-cluster-master-1 for cluster talos-test-cluster exists.
I0507 16:35:57.897804       1 controller.go:222] Reconciling machine object talos-test-cluster-master-1 triggers idempotent create.
I0507 16:35:57.897774       1 controller.go:149] Failed to add finalizers to machine "talos-test-cluster-master-1": Operation cannot be fulfilled on machines.cluster.k8s.io "talos-test-cluster-master-1": the object has been modified; please apply your changes to the latest version and try again
2019/05/07 16:35:57 Creating machine talos-test-cluster-master-1 for cluster talos-test-cluster.
{"level":"error","ts":1557246957.897833,"logger":"kubebuilder.controller","msg":"Reconciler error","controller":"machine-controller","request":"default/talos-test-cluster-master-1","error":"Operation cannot be fulfilled on machines.cluster.k8s.io \"talos-test-cluster-master-1\": the object has been modified; please apply your changes to the latest version and try again","stacktrace":"github.com/talos-systems/cluster-api-provider-talos/vendor/github.com/go-logr/zapr.(*zapLogger).Error\n\t/go/src/github.com/talos-systems/cluster-api-provider-talos/vendor/github.com/go-logr/zapr/zapr.go:128\ngithub.com/talos-systems/cluster-api-provider-talos/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/go/src/github.com/talos-systems/cluster-api-provider-talos/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:217\ngithub.com/talos-systems/cluster-api-provider-talos/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func1\n\t/go/src/github.com/talos-systems/cluster-api-provider-talos/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:158\ngithub.com/talos-systems/cluster-api-provider-talos/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil.func1\n\t/go/src/github.com/talos-systems/cluster-api-provider-talos/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133\ngithub.com/talos-systems/cluster-api-provider-talos/vendor/k8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/go/src/github.com/talos-systems/cluster-api-provider-talos/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:134\ngithub.com/talos-systems/cluster-api-provider-talos/vendor/k8s.io/apimachinery/pkg/util/wait.Until\n\t/go/src/github.com/talos-systems/cluster-api-provider-talos/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:88"}
I0507 16:35:58.898594       1 controller.go:113] Reconciling Machine "talos-test-cluster-master-1"
2019/05/07 16:35:58 Checking if machine talos-test-cluster-master-1 for cluster talos-test-cluster exists.
I0507 16:35:58.898842       1 controller.go:207] Reconciling machine "talos-test-cluster-master-1" triggers idempotent update
2019/05/07 16:35:58 Updating machine talos-test-cluster-master-1 for cluster talos-test-cluster.

machine resource

$ kubectl get machines -o yaml
apiVersion: v1
items:
- apiVersion: cluster.k8s.io/v1alpha1
  kind: Machine
  metadata:
    creationTimestamp: "2019-05-07T16:35:57Z"
    finalizers:
    - foregroundDeletion
    - machine.cluster.k8s.io
    generation: 2
    labels:
      cluster.k8s.io/cluster-name: talos-test-cluster
      set: master
    name: talos-test-cluster-master-1
    namespace: default
    ownerReferences:
    - apiVersion: cluster.k8s.io/v1alpha1
      blockOwnerDeletion: true
      kind: Cluster
      name: talos-test-cluster
      uid: 2bb3db64-70e6-11e9-b66e-4223dedeed79
    resourceVersion: "11506069"
    selfLink: /apis/cluster.k8s.io/v1alpha1/namespaces/default/machines/talos-test-cluster-master-1
    uid: 30f80806-70e6-11e9-b66e-4223dedeed79
  spec:
    metadata:
      creationTimestamp: null
    providerSpec:
      value:
        apiVersion: talosproviderconfig/v1alpha1
        kind: TalosMachineProviderSpec
        platform:
          config: |-
            region: "us-west-2"
            instances:
              type:  "t2.micro"
              ami: "ami-0e9ab2a16128220c5"
              disks:
                size: 10
          type: aws
kind: List
metadata:
  resourceVersion: ""
  selfLink: ""