ClassCastException when kcontainer.updateToVersion() with sliding window rule running

Exception in thread "pool-23-thread-2" java.lang.ClassCastException: org.drools.core.reteoo.PathMemory cannot be cast to org.drools.core.reteoo.WindowNode$WindowMemory
	at org.drools.core.reteoo.WindowNode.retractRightTuple(WindowNode.java:189)
	at org.drools.core.reteoo.ObjectTypeNode.doRetractObject(ObjectTypeNode.java:325)
	at org.drools.core.reteoo.ObjectTypeNode.retractObject(ObjectTypeNode.java:317)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl$WorkingMemoryReteExpireAction.execute(StatefulKnowledgeSessionImpl.java:1770)
	at org.drools.core.phreak.SynchronizedPropagationList.flush(SynchronizedPropagationList.java:96)
	at org.drools.core.phreak.SynchronizedPropagationList.flush(SynchronizedPropagationList.java:69)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.flushPropagations(StatefulKnowledgeSessionImpl.java:2007)
	at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1289)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1306)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1293)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1272)
	at com.sample.CallKjarTest$2.run(CallKjarTest.java:67)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)