Mqtt5 client not reporting DUP flag correctly (always false) on reception of PUB message

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Yes mqttv5 client only- [ ] Bug exists Release Version 1.2.5 ( Master Branch)
- [ ] Bug exists in MQTTv3 Client on Snapshot Version 1.2.6-SNAPSHOT (Develop Branch)
Did not test. Do not see in maven repository- [ ] Bug exists in MQTTv5 Client on Snapshot Version 1.2.6-SNAPSHOT (Develop Branch)

The DUP setting of a received MQTTv5 PUB message is not correctly reported and is always false using the MqttMessage.isDuplicate() API i/f.
Note that this has degraded and v3 client reports DUP=true correctly.
The DUP flag is processed correctly by MqttWireMessage:createWireMessage .
However the relay to the callback receiver is neglecting this DUP setting:
ClientState:notifyReceivedMsg -> MqttPublish:getMessage -> MqttMessage(byte[] payload, int qos, boolean retained, MqttProperties properties)

If this is a bug regarding the Android Service, please raise the bug here instead: https://github.com/eclipse/paho.mqtt.android/issues/new