ClickHouse Operator Deletes the PVC

Here is the scenario, which I have seen this issue happening twice in my QA Cluster where I see my PVC got deleted by the Clickhouse Operator.

1. In a 3 shard 3 replica setup, when one of the pod goes down due to some issues - space issue or due to "TOO_MANY_PARTS" issue, i had to scale down manually the STS on few pods. When I bring it up back, i suspect (i may be wrong) that 1-0-0 pod gets attached different pvc (could 2-0-1) and so on and so forth.
2. In this kind of inconsistent state, when I redeploy clickhouse through operator, it fails miserably stating that "Failed to reconcile 1-0-0 pod and with some crud error" and asked me to reconcile / delete services and recreate.
3. I did that and redeployed, now - this time 1-0-0 pod got created and same error happened for 1-0-1 pod and the CHI is in InProgress state and i deleted the CHI by mistake and it deleted my two PVCs that are in progress.

Though I've not seen this issue happening very often, i suspect this is happening only if scale up the sts manually and not through operator. Is it possible to fix this or by any chance, why is the operator deleting the PVC at any cost ?

Start by reproducing the reported 3-shard, 3-replica scenario using manual StatefulSet scaling, operator reconciliation, and CHI deletion. Trace which reconciliation step deletes PVCs when pod identities or attachments are inconsistent; done means the cause is identified and PVC deletion is prevented or explicitly justified, with the failure covered by a regression test.