GXByteBuffer not cleared after processing the push messages

Dear,
With the latest version of gurux.dlms (3.0.6) the GXByteBuffer used for storing the received push messages is not cleared. The code we have is similar to the push receiver example and we didn't observe this behaviour in the older versions (2.X). Is this behaviour expected and we have to manually clear the buffer or are we doing something wrong or is it a bug?
Below is the code we are using:
public void onReceived(Object sender, ReceiveEventArgs e) {
//Some pre-processing
try {
synchronized (this) {
logDebug("Start message processing", true);
reply.set((byte[]) e.getData());
//Create separate clients for each meter due to the encryption
source = sources.get(senderId.toLowerCase());
GXDLMSSecureClient client = getOrCreateClient(source);
//I belive in earlier version(2.x) the buffer was cleared here.
client.getData(reply, source.getData());
if (source.getData().isComplete() && !source.getData().isMoreData()) {
try {
//Perform XML translation and business logic
} finally {
source.clearData();
source.setClient(null);
}
}
}
} catch (Throwable t) {
if (source != null) {
source.clearData();
source.setClient(null);
}
}
}

Attached a screenshot of the debug window with variables.

Best Regards
Pramod