Node stuck in joining mode while bootstrapping a 4.6.5 Scylla node

Hi,

We are trying to bootstrap a node in to the 4.6.5 Scylla cluster but looks like node is stuck in joining mode and allowed_repair_based_node_ops={replace} option is picked up by Scylla even when we disable or enable RBNO. Logs shows compaction of shard 0 system column families and there are numerous compactions of system schema tables in a loop and node never joins the cluster. Can anyone please throw some light or any inputs on how to fix this issue?

Thanks & Regards,
Satish