Document URL: 
https://docs.openshift.com/container-platform/4.11/storage/container_storage_interface/persistent-storage-csi-cloning.html#support-limitations

Section Number and Name: 
Support limitations

Describe the issue: 
CSI Cloning is supported with a different Storage Class from 4.11. In openshift doc, it mentions: 
The source and destination storage class must be the same.

Suggestions for improvement: 
This should be removed.
Or we could update like this:

Cloning is supported with a different Storage Class.
    Destination volume can be the same or a different storage class as the source.
    Default storage class can be used and storageClassName omitted in the spec.