When I create a catsrc or a sub, there is a lot of senseless message "the object has been modified; please apply your changes to the latest version and try again". 
Actually, there is no need to take action, but the message make me confused, it seems to request me to take some action.

4.13

always

1. oc new-project test-1
2. create a catsrc
zhaoxia@xzha-mac OCP-22618 % cat catsrc.yaml
apiVersion: operators.coreos.com/v1alpha1
kind: CatalogSource
metadata:
  name: test-index
  namespace: test-1
spec:
  displayName: Test
  publisher: OLM-QE
  sourceType: grpc
  image: quay.io/olmqe/nginxolm-operator-index:v1
  updateStrategy:
    registryPoll:
      interval: 10m
zhaoxia@xzha-mac OCP-22618 % oc apply -f catsrc.yaml

 3. create sub
zhaoxia@xzha-mac OCP-22618 % cat sub.yaml 
apiVersion: operators.coreos.com/v1alpha1
kind: Subscription
metadata:
  name: test
  namespace: test-1
spec:
  installPlanApproval: Automatic
  name: nginx-operator
  source: test-index
  sourceNamespace: test-1
zhaoxia@xzha-mac OCP-22618 % oc apply -f sub.yaml

zhaoxia@xzha-mac release % oc get csv -n test-1
NAME                            DISPLAY                            VERSION   REPLACES                PHASE
elasticsearch-operator.v5.7.0   OpenShift Elasticsearch Operator   5.7.0                             Succeeded
loki-operator.v5.7.0            Loki Operator                      5.7.0                             Succeeded
nginx-operator.v1.0.1           nginxolm                           1.0.1     nginx-operator.v0.0.1   Succeeded
zhaoxia@xzha-mac release % oc get catsrc -n test-1
NAME         DISPLAY   TYPE   PUBLISHER   AGE
test-index   Test      grpc   OLM-QE      68m
zhaoxia@xzha-mac release % oc get pod  -n test-1
NAME                                                              READY   STATUS      RESTARTS   AGE
5dced1ff01d9cb888f370b026b91f0578fe0db5cf39ef8a92542ab4a42dm9jw   0/1     Completed   0          68m
nginx-operator-controller-manager-7687f4576f-dk7gn                2/2     Running     0          67m
test-index-rxrvr                                                  1/1     Running     0          68m

4, check catalog-operator log
zhaoxia@xzha-mac release % oc logs catalog-operator-8469db6595-q6lw5 -n openshift-operator-lifecycle-manager| grep test-1| grep failed
E0509 07:28:43.103789       1 queueinformer_operator.go:298] sync {"update" "test-1/test-index"} failed: Operation cannot be fulfilled on catalogsources.operators.coreos.com "test-index": the object has been modified; please apply your changes to the latest version and try again
E0509 07:29:05.054958       1 queueinformer_operator.go:298] sync {"update" "test-1/test"} failed: Operation cannot be fulfilled on subscriptions.operators.coreos.com "test": the object has been modified; please apply your changes to the latest version and try again
E0509 07:29:08.212255       1 queueinformer_operator.go:298] sync {"update" "test-1/test"} failed: Operation cannot be fulfilled on subscriptions.operators.coreos.com "test": the object has been modified; please apply your changes to the latest version and try again
E0509 07:29:08.611354       1 queueinformer_operator.go:298] sync {"update" "test-1/install-lkljj"} failed: failed to update installplan bundle lookups: Operation cannot be fulfilled on installplans.operators.coreos.com "install-lkljj": the object has been modified; please apply your changes to the latest version and try again
E0509 08:19:06.155804       1 queueinformer_operator.go:298] sync {"update" "test-1/test-index"} failed: Operation cannot be fulfilled on catalogsources.operators.coreos.com "test-index": the object has been modified; please apply your changes to the latest version and try again

There are some error log "the object has been modified; please apply your changes to the latest version and try again"

no such senseless message