BGP does not reconnect after partitioned cluster heals

2019-08-20T19:35:34,739 | INFO  | opendaylight-cluster-data-shard-dispatcher-46 | ShardManager                     | 282 - org.opendaylight.controller.sal-distributed-datastore - 1.8.1 | shard-manager-operational Received follower initial sync status for member-1-shard-default-operational status sync done true
2019-08-20T19:35:34,748 | WARN  | opendaylight-cluster-data-akka.actor.default-dispatcher-52 | ClusterSingletonServiceGroupImpl | 335 - org.opendaylight.mdsal.singleton-dom-impl - 2.5.1 | Service group bgp-rib-service-group service org.opendaylight.protocol.bgp.rib.impl.config.BGPClusterSingletonService@17397d1 failed to start, attempting to continue
java.lang.NullPointerException: null
        at org.opendaylight.protocol.bgp.rib.impl.AdjRibInWriter.transform(AdjRibInWriter.java:149) ~[223:org.opendaylight.bgpcep.bgp-rib-impl:0.10.1]
        at org.opendaylight.protocol.bgp.rib.impl.ApplicationPeer.instantiateServiceInstance(ApplicationPeer.java:154) ~[223:org.opendaylight.bgpcep.bgp-rib-impl:0.10.1]
        at org.opendaylight.protocol.bgp.rib.impl.config.AppPeer$BgpAppPeerSingletonService.instantiateServiceInstance(AppPeer.java:135) ~[223:org.opendaylight.bgpcep.bgp-rib-impl:0.10.1]
        at org.opendaylight.protocol.bgp.rib.impl.config.AppPeer.instantiateServiceInstance(AppPeer.java:88) ~[223:org.opendaylight.bgpcep.bgp-rib-impl:0.10.1]
        at java.util.HashMap$Values.forEach(HashMap.java:981) [?:?]
        at org.opendaylight.protocol.bgp.rib.impl.config.BGPClusterSingletonService.instantiateServiceInstance(BGPClusterSingletonService.java:98) [223:org.opendaylight.bgpcep.bgp-rib-impl:0.10.1]
        at org.opendaylight.mdsal.singleton.dom.impl.ClusterSingletonServiceGroupImpl.ensureServicesStarting(ClusterSingletonServiceGroupImpl.java:636) [335:org.opendaylight.mdsal.singleton-dom-impl:2.5.1]
        at org.opendaylight.mdsal.singleton.dom.impl.ClusterSingletonServiceGroupImpl.tryReconcileState(ClusterSingletonServiceGroupImpl.java:563) [335:org.opendaylight.mdsal.singleton-dom-impl:2.5.1]
        at org.opendaylight.mdsal.singleton.dom.impl.ClusterSingletonServiceGroupImpl.reconcileState(ClusterSingletonServiceGroupImpl.java:458) [335:org.opendaylight.mdsal.singleton-dom-impl:2.5.1]
        at org.opendaylight.mdsal.singleton.dom.impl.ClusterSingletonServiceGroupImpl.ownershipChanged(ClusterSingletonServiceGroupImpl.java:339) [335:org.opendaylight.mdsal.singleton-dom-impl:2.5.1]
        at org.opendaylight.mdsal.singleton.dom.impl.AbstractClusterSingletonServiceProviderImpl.ownershipChanged(AbstractClusterSingletonServiceProviderImpl.java:238) [335:org.opendaylight.mdsal.singleton-dom-impl:2.5.1]
        at org.opendaylight.mdsal.singleton.dom.impl.DOMClusterSingletonServiceProviderImpl.ownershipChanged(DOMClusterSingletonServiceProviderImpl.java:23) [335:org.opendaylight.mdsal.singleton-dom-impl:2.5.1]
        at org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnershipListenerActor.onEntityOwnershipChanged(EntityOwnershipListenerActor.java:44) [282:org.opendaylight.controller.sal-distributed-datastore:1.8.1]
        at org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnershipListenerActor.handleReceive(EntityOwnershipListenerActor.java:33) [282:org.opendaylight.controller.sal-distributed-datastore:1.8.1]
        at org.opendaylight.controller.cluster.common.actor.AbstractUntypedActor.onReceive(AbstractUntypedActor.java:38) [274:org.opendaylight.controller.sal-clustering-commons:1.8.1]
        at akka.actor.UntypedActor$$anonfun$receive$1.applyOrElse(UntypedActor.scala:167) [37:com.typesafe.akka.actor:2.5.11]
        at akka.actor.Actor.aroundReceive(Actor.scala:517) [37:com.typesafe.akka.actor:2.5.11]
        at akka.actor.Actor.aroundReceive$(Actor.scala:515) [37:com.typesafe.akka.actor:2.5.11]
        at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:97) [37:com.typesafe.akka.actor:2.5.11]
        at akka.actor.ActorCell.receiveMessage(ActorCell.scala:590) [37:com.typesafe.akka.actor:2.5.11]
        at akka.actor.ActorCell.invoke(ActorCell.scala:559) [37:com.typesafe.akka.actor:2.5.11]
        at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257) [37:com.typesafe.akka.actor:2.5.11]
        at akka.dispatch.Mailbox.run(Mailbox.scala:224) [37:com.typesafe.akka.actor:2.5.11]
        at akka.dispatch.Mailbox.exec(Mailbox.scala:234) [37:com.typesafe.akka.actor:2.5.11]
        at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) [37:com.typesafe.akka.actor:2.5.11]
        at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) [37:com.typesafe.akka.actor:2.5.11]
        at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) [37:com.typesafe.akka.actor:2.5.11]
        at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) [37:com.typesafe.akka.actor:2.5.11]