Possible bug: Rebalance and replication factor >1 does not work with long names?

Everything works fine if replication is disabled, but once enabled, the following error appears:

2-nodes CE 7.0 Beta deployed to Kubernetes. This appears with CE 6.0/6.5 as well.

I confirm that picking a shorter server name results in successful replication.

I think this is actually a duplicate of the issue [1].

Can someone confirm this as well? Am I on the wrong track?

[1] In Couchbase 7.0.0 Beta Community Edition can not add bucket with replicas