Multivalued attribute with inbound+outbound does not work

Steps to reproduce:

1. Import OpenDJ resource definition and Janko Hrasko user from the attached files. Recompute Janko Hrasko in order to create his account on OpenDJ.
2. The resource has the following definition:

                                     <attribute>		<!--  MID-3395 -->
   					<ref>ri:employeeType</ref>
   					<displayName>Employee Type</displayName>
   					<tolerant>false</tolerant>
   					<outbound>
   						<source>
   							<path>$user/employeeType</path>
   						</source>
   					</outbound>
   					<inbound>
   						<target>
   							<path>$user/employeeType</path>
   						</target>
   					</inbound>
   				</attribute>
   

3. Now open the user and ADD a new employeeType of "type2". Save.
4. After execution it looks like this:
   • Account has employeeType of type1 and type2 (OK)
   • User has employeeType of type2 (wrong)

Analysis:

1. Wave 0 went OK (resulting in user delta: add type2 to employeeType, shadow delta: add type2 to employeeType)
2. In wave 1, inbound processing, there is:

   2016-09-13 06:54:13,205 [] [http-apr-8080-exec-5] TRACE (com.evolveum.midpoint.model.impl.lens.projector.InboundProcessor): Processing inbound for {.../resource/instance-3}employeeType in Discr(RSD(account (default) @ef2bc95b-76e0-48e2-86d6-3d4f02d3e1a2)); (1 mappings)
   2016-09-13 06:54:13,205 [] [http-apr-8080-exec-5] TRACE (com.evolveum.midpoint.model.impl.lens.projector.InboundProcessor): Processing inbound from a priori delta: ObjectDelta(ShadowType:9e7eac3d-9dd4-4fa8-a30a-de89562ab843,MODIFY: PropertyDelta(attributes / {.../resource/instance-3}employeeType, ADD), PropertyDelta(metadata / {.../common/common-3}modifyChannel, REPLACE), PropertyDelta(metadata / {.../common/common-3}modifyTimestamp, REPLACE), ReferenceDelta(metadata / {.../common/common-3}modifierRef, REPLACE))
   2016-09-13 06:54:13,205 [] [http-apr-8080-exec-5] TRACE (com.evolveum.midpoint.model.impl.lens.projector.InboundProcessor): Inbound mapping for {http://midpoint.evolveum.com/xml/ns/public/resource/instance-3}employeeType returned triple:
   DeltaSetTriple:
     zero:
     plus:
       type2
     minus:
   2016-09-13 06:54:13,205 [] [http-apr-8080-exec-5] TRACE (com.evolveum.midpoint.model.impl.lens.projector.InboundProcessor): Comparing focus item:
     employeeType: [ type1, type2 ]
   to should be item:
     employeeType: [ type2 ]
   diff:
     employeeType
       DELETE: type1 
   2016-09-13 06:54:13,205 [] [http-apr-8080-exec-5] TRACE (com.evolveum.midpoint.model.impl.lens.projector.InboundProcessor): Created delta (from inbound expression for {http://midpoint.evolveum.com/xml/ns/public/resource/instance-3}employeeType on resource:ef2bc95b-76e0-48e2-86d6-3d4f02d3e1a2(Localhost OpenDJ (no extension schema)))
     employeeType
       DELETE: type1