I've reproduced the problem again on my cluster and collected must gather logs which are available here : 

rhsqe-repo.lab.eng.blr.redhat.com:/var/www/html/OCS/ocs-qe-bugs/bz-2207780/

It seems that The problem is persistent. 

The eteps I've performed : 

1) I've deployed a cluster ( cluster name ypersky-c13, https://ocs4-jenkins-csb-odf-qe.apps.ocp-c1.prod.psi.redhat.com/job/qe-deploy-ocs-cluster/24752/ ) with the following versions: 

 OCP versions
        ==============

                clientVersion:
                  buildDate: "2023-04-19T04:06:40Z"
                  compiler: gc
                  gitCommit: 92b1a3d0e5d092430b523f6541aa0c504b2222b3
                  gitTreeState: clean
                  gitVersion: 4.13.0-202304190216.p0.g92b1a3d.assembly.stream-92b1a3d
                  goVersion: go1.19.6
                  major: ""
                  minor: ""
                  platform: linux/amd64
                kustomizeVersion: v4.5.7
                openshiftVersion: 4.13.0-0.nightly-2023-05-22-040653
                releaseClientVersion: 4.13.0-0.nightly-2023-05-18-013939
                serverVersion:
                  buildDate: "2023-04-19T02:20:48Z"
                  compiler: gc
                  gitCommit: 9ded806a7d5deed41a20f680cf89dae58bbb5697
                  gitTreeState: clean
                  gitVersion: v1.26.3+b404935
                  goVersion: go1.19.6
                  major: "1"
                  minor: "26"
                  platform: linux/amd64
                
                
                Cluster version:

                NAME      VERSION                              AVAILABLE   PROGRESSING   SINCE   STATUS
                version   4.13.0-0.nightly-2023-05-22-040653   True        False         5d23h   Cluster version is 4.13.0-0.nightly-2023-05-22-040653

2) I've created a pvc :  yuli-test-pvc - 1 GB pvc in default namespace, the yaml output after creation is : 

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: yuli-test-pvc
  namespace: default
  uid: ed7a31b2-aa0c-43a7-a00d-6bcfc8fea169
  resourceVersion: '2044227'
  creationTimestamp: '2023-05-25T14:25:35Z'
  annotations:
    pv.kubernetes.io/bind-completed: 'yes'
    pv.kubernetes.io/bound-by-controller: 'yes'
    volume.beta.kubernetes.io/storage-provisioner: openshift-storage.rbd.csi.ceph.com
    volume.kubernetes.io/storage-provisioner: openshift-storage.rbd.csi.ceph.com
  finalizers:
    - kubernetes.io/pvc-protection
  managedFields:
    - manager: Mozilla
      operation: Update
      apiVersion: v1
      time: '2023-05-25T14:25:35Z'
      fieldsType: FieldsV1
      fieldsV1:
        'f:spec':
          'f:accessModes': {}
          'f:resources':
            'f:requests':
              .: {}
              'f:storage': {}
          'f:storageClassName': {}
          'f:volumeMode': {}
    - manager: kube-controller-manager
      operation: Update
      apiVersion: v1
      time: '2023-05-25T14:25:35Z'
      fieldsType: FieldsV1
      fieldsV1:
        'f:metadata':
          'f:annotations':
            .: {}
            'f:pv.kubernetes.io/bind-completed': {}
            'f:pv.kubernetes.io/bound-by-controller': {}
            'f:volume.beta.kubernetes.io/storage-provisioner': {}
            'f:volume.kubernetes.io/storage-provisioner': {}
        'f:spec':
          'f:volumeName': {}
    - manager: kube-controller-manager
      operation: Update
      apiVersion: v1
      time: '2023-05-25T14:25:35Z'
      fieldsType: FieldsV1
      fieldsV1:
        'f:status':
          'f:accessModes': {}
          'f:capacity':
            .: {}
            'f:storage': {}
          'f:phase': {}
      subresource: status
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
  volumeName: pvc-ed7a31b2-aa0c-43a7-a00d-6bcfc8fea169
  storageClassName: ocs-storagecluster-ceph-rbd
  volumeMode: Filesystem
status:
  phase: Bound
  accessModes:
    - ReadWriteOnce
  capacity:
    storage: 1Gi

3) I've created a VR with the following yaml file: 

apiVersion: replication.storage.openshift.io/v1alpha1
kind: VolumeReplication
metadata:
  name: volume-replication-sample
  namespace: default
spec:
  volumeReplicationClass: volumereplicationclass-sample
  replicationState: primary
  autoResync: false
  dataSource:
    kind: PersistentVolumeClaim
    name: yuli-test-pvc


Result: The VR was created : 

[ypersky@ypersky ocs-ci]$ oc create -f /home/ypersky/ypersky-yaml/ypersky-csi/VR_test.yaml 
volumereplication.replication.storage.openshift.io/volume-replication-sample created

4) I've edited volumereplication.replication.storage.openshift.io/volume-replication-sample  ( changed PVC name ( spec => name) and volumeReplicationClass). And those were successfully edited. 

You are welcome to take a loot at ypersky-c13 : https://ocs4-jenkins-csb-odf-qe.apps.ocp-c1.prod.psi.redhat.com/job/qe-deploy-ocs-cluster/24752/.

In addition to comment#5 - the must gather logs were collected and are located in  rhsqe-repo.lab.eng.blr.redhat.com:/var/www/html/OCS/ocs-qe-bugs/bz-2207780/
.

Reproduction instructions: 
1) Create a pvc in default namespace ( or any other different from openshift-storage namespace) 
2) Create VR for the pvc created in 1 ( edit the relevant yaml file with the correct pvc name) 
3) Edit pvc name / VRC in the created VR object 

=> it should NOT be editable.

Moving to 4.14 as per the decision, more details are on the epic Jira https://issues.redhat.com/browse/RHSTOR-3863

Moving it to 4.15, I belive the component should be csi-addons.

https://github.com/csi-addons/kubernetes-csi-addons/pull/459 has been merged for upstream. Once the downstream component is rebased for ODF-4.15 the fix will be included.

Downstream PR that syncs the change into the release-4.15 branch: https://github.com/red-hat-storage/kubernetes-csi-addons/pull/89

This is parh of a larger ODF-4.15 feature, which is tracked and verified through Jira.