Types declared in DRL with no fields are not included in KnowledgeBase compiled by ChangeSet

Setting up KnowledgeBase using KnowledgeAgent which is pulling package from Guvnor. DRL declares type, which already exists in client model, with @role(event) and no fields. Get the following stack trace when inserting an object:

java.lang.NullPointerException
at org.drools.reteoo.ReteooFactHandleFactory.newFactHandle(ReteooFactHandleFactory.java:56)
at org.drools.common.AbstractFactHandleFactory.newFactHandle(AbstractFactHandleFactory.java:80)
at org.drools.common.AbstractFactHandleFactory.newFactHandle(AbstractFactHandleFactory.java:65)
at org.drools.common.NamedEntryPoint.createHandle(NamedEntryPoint.java:705)
at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:282)
at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:905)
at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:864)
at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:255)
at john.DroolsError.runRules(DroolsError.java:48)
at john.DroolsError.main(DroolsError.java:40)

If the type is fully declared in the DRL, the NPE does not occur.

When compiling a DRL from a Change Set, the resulting package in the Knowledge Base does not contain declare'd types that do not contain fields; it only contains declares with at least one field. This results in a ClassObjectTypeConf with a typeDecl == null.