[keycloak-user] Third slave disconnects random slave

Hi, I want to connect 3 slaves in Domain Mode, everything works fine for 2 slaves, but if I connect a third one random of the former two get disconnected after a cluster-wide rebalance: slave1_1 | [Server:slave1] slave3_1 | [Server:slave3] 06:58:42,688 INFO [org.hibernate.validator.internal.util.Version] (ServerService Thread Pool -- 54) HV000001: Hibernate Validator 5.2.3.Final slave1_1 | 06:58:42,675 INFO [org.jboss.as.process.Server:slave1.status] (reaper for Server:slave1) WFLYPC0011: Process 'Server:slave1' finished with an exit status of 137 slave1_1 | [Host Controller] 06:58:42,877 INFO [org.jboss.as.host.controller] (ProcessControllerConnection-thread - 2) WFLYHC0027: Unregistering server slave1 I think there is some setting I missed? Best regards and thanks Marc