Etcd operator is in degraded state as one of the masters can't connect.
Master that fails to connect was previously bootstrap and pivoted as part of assisted-installer installation to master.

~~~ 
Message: 660321f5c05c23f2, started, etcd-bootstrap, https://192.168.15.11:2380, https://192.168.15.11:2379, false
66b18d00d45644a1, started, control-plane3, https://192.168.15.13:2380, https://192.168.15.13:2379, false
a913f5c640e7c99b, started, control-plane2, https://192.168.15.12:2380, https://192.168.15.12:2379, false
attempt 0
member={name="etcd-bootstrap", peerURLs=[https://192.168.15.11:2380}, clientURLs=https://192.168.15.11:2379
member={name="control-plane3", peerURLs=[https://192.168.15.13:2380}, clientURLs=https://192.168.15.13:2379
member={name="control-plane2", peerURLs=[https://192.168.15.12:2380}, clientURLs=https://192.168.15.12:2379
target={name="etcd-bootstrap", peerURLs=[https://192.168.15.11:2380}, clientURLs=https://192.168.15.11:2379
member "https://192.168.15.11:2380" dataDir has been destroyed and must be removed from the cluster
Exit Code: 1
Started: Mon, 04 Sep 2023 22:36:48 +0000
Finished: Mon, 04 Sep 2023 22:36:48 +0000
Ready: False
Restart Count: 366
~~~

4.13.6 

N/A - Randomly detected on bare-metal and Virtual environments 

Not clear at this moment. 

Etcd is degraded, causing third joined master etcd can't start

Cluster in a healthy state without manual interaction. 

KB https://access.redhat.com/solutions/6962106 describe the workaround for this issue, but it seems that this is a new ocurrence of Bug Report [OCPBUGS-5988](https://issues.redhat.com/browse/OCPBUGS-5988).