Certificate Singing Request does not return the certificate after approval in EKS 1.21

The certified is approved but not issued:

kubectl get csr -n stackgres                                            
NAME                 AGE   SIGNERNAME                      REQUESTOR                                                 CONDITION
stackgres-operator   13m   kubernetes.io/kubelet-serving   system:serviceaccount:stackgres:stackgres-operator-init   Approved