Percona Server for MySQL / HashiCorp Vault plugin / replication setup

I try to setup PS8 with Encryption at rest using hashicorp vault to store the keyring.
Which works fine, but in the documentation ( is a warning:

“Each secret_mount_point must be used by only one server. If multiple servers use the same secret_mount_point, the behavior is unpredictable.”

For different single servers this seems reasonable, but what about a replication setup?
On a file based keyring I would just copy the keyring file as the files are copied from the replications source. But the above warning does imply that this is not the way to go in case of hashicorp vault.