Mariadb 10.1 / Galera - bootstrap node always doesn't lose quorum

I'm using mariadb10.1.37, wsrep_provider_version 25.3.24(r3825). On my dev cluster (2node+1arbitrator) I found the following behaviour: **node1:** bootstrap new cluster (using galera_new_cluster, with pc.weight=3) **node2:** join cluster (pc.weight=3) **arbitrator:** join cluster (pc.weight =1) So, I have a three node cluster, with total pc.weight of 7. Then I do: **arbitrator:** shutdown garbd **node2:** shutdown mysqld At this point, I expect node1, being only node out of three still alive, should have lost wsrep_cluster_status=Primary status, and no longer accept writes. Instead, I find wsrep_cluster_status = Primary, wsrep_cluster_size=1, and yet node1 will still accept writes. Is there something I am missing? Thanks in advance!