LeaseLostException in single instance of EventProcessorHost for IOT Hub

Question

I have created a simple event processor host which reads events from Azure IOT hub configured with the default options for lease management.
But at regular intervals, I get following exception even though I am running single instance of the EventProcessorHost:
ReceiverDisconnectedException: New receiver with higher epoch is created hence current receiver with epoch is getting disconnected. Reason: LeaseLost
The client re-acquires the lease and process messages further.

Here is the initialization of the EventProcessorHost

EventProcessorHost eventProcessorHost = new EventProcessorHost(hostName, eventHubName, EventHubConsumerGroup.DefaultGroupName,
            eventHubConnectionString, storageAccountConnectionString);
var options = new EventProcessorOptions();
options.ExceptionReceived += (sender, e) =>
{
    Console.WriteLine(e.Exception);
};

eventProcessorHost.PartitionManagerOptions = PartitionManagerOptions.DefaultOptions;
eventProcessorHost.RegisterEventProcessorAsync<SimpleEventProcessor>(options).Wait();

Is this behaviour normal or I need to do something to avoid it for a single instance?

Below is my EventProcessor:

public class SimpleEventProcessor : IEventProcessor
{
    Stopwatch checkpointStopWatch;

    public async Task CloseAsync(PartitionContext context, CloseReason reason)
    {
        Console.WriteLine("Processor Shutting Down. Partition '{0}', Reason: '{1}'.", context.Lease.PartitionId, reason);
        await context.CheckpointAsync();
    }

    public Task OpenAsync(PartitionContext context)
    {
        Console.WriteLine("SimpleEventProcessor initialized.  Partition: '{0}', Offset: '{1}'", context.Lease.PartitionId, context.Lease.Offset);
        this.checkpointStopWatch = new Stopwatch();
        this.checkpointStopWatch.Start();
        this.rawDataService = new RawDataService();
        return Task.FromResult<object>(null);
    }

    public async Task ProcessEventsAsync(PartitionContext context, IEnumerable<EventData> messages)
    {
        foreach (EventData eventData in messages)
        {
            string data = Encoding.UTF8.GetString(eventData.GetBytes());
            Console.WriteLine(string.Format("Message received.  Partition: '{0}', Data: '{1}'", context.Lease.PartitionId, data));
        }
    }
}