Kie-container in unmanaged mode not installing rule containers in BPMS 6.2.2 release

Issue

We are using kie-server in un-managed mode, we have created multiple containers using REST API. After JBoss server restart, sometimes it's not installing/loading the rule containers. If we query for list container, it's not returning any. Here are the two scenarios. Once it successfully installed the containers and the other time it didn't.

Failure:

INFO  [org.kie.server.services.impl.ContainerManager] (EJB default - 1) About to install containers '[]' on kie server 'KieServer{id='15ad5bfa-7532-3eea-940a-abbbbc89f1e8'name='KieServer@/kie-server'version='6.3.0.Final-redhat-9'location='http://localhost:8080/kie-server/services/rest/server'}'

Success:

INFO  [org.kie.server.services.impl.ContainerManager] (EJB default - 1) About to install containers '[KieContainerResource [containerId=container-1, releaseId=com.sample:SampleProject:1.0.2, resolvedReleaseId=null, status=STARTED], KieContainerResource [containerId=container-1.0, releaseId=com.sample:SampleProject:1.0, resolvedReleaseId=null, status=STARTED], KieContainerResource [containerId=container-1.0.1, releaseId=com.sample:SampleProject:1.0.1, resolvedReleaseId=null, status=STARTED], KieContainerResource [containerId=container-1.0.2, releaseId=com.sample:SampleProject:1.0, resolvedReleaseId=null, status=STARTED]]' on kie server 'KieServer{id='15ad5bfa-7532-3eea-940a-abbbbc89f1e8'name='KieServer@/kie-server'version='6.3.0.Final-redhat-9'location='http://localhost:8080/kie-server/services/rest/server'}'