Test Clone from volumesnapshot source sourceRef support  failed in 4.20 run:
https://jenkins-csb-cnvqe-main.dno.corp.redhat.com/job/test-cdi-cnv-4.20-ocs/49/testReport/(root)/Tests%20Suite/_It__all_clone_tests__rfe_id_9453__Clone_from_volumesnapshot_source_sourceRef_support__test_id_9758__Should_clone_data_from_SourceRef_snapshot_DataSource_with_size_specified_on_target/

The failure was caused by the snapshot controller not retrying after a PVC finalizer removal error.
When checkandRemovePVCFinalizer() fails (e.g., with “object has been modified; please apply your changes to the latest version and try again”), the error is only logged and not returned, so the reconciliation loop does not requeue the snapshot for another attempt.
This results in PVC finalizers remaining on the object and snapshots stuck in a terminating or pending state.