DotNetty.Buffers IndexOutOfBoundsException on ChannelGroup.WriteAndFlushAsync(Unpooled.Empty)

[Aaronontheweb]

Haven't determined what the underlying cause of the error is yet, but the following block of code throws an IndexOutOfBoundsException inside the Task returned on ChannelGroup.WriteAndFlushAsync

public override async Task<bool> Shutdown()
{
    Func<Task, bool> always = task => task.IsCompleted & !task.IsCanceled & !task.IsFaulted;

    var writeStatus = ChannelGroup.WriteAndFlushAsync(Unpooled.Empty).ContinueWith(always); //throws inside Task
    var disconnectStatus = ChannelGroup.DisconnectAsync().ContinueWith(always);
    var closeStatus = ChannelGroup.CloseAsync().ContinueWith(always);
    //_eventListener.Dispose();
    return await Task.WhenAll(writeStatus, disconnectStatus, closeStatus).ContinueWith(tr =>
    {
        if (tr.IsFaulted || tr.IsCanceled) return false;
        return tr.Result.All(x => x);
    });
}

[Aaronontheweb]

Stacktrace:

   at DotNetty.Buffers.EmptyByteBuffer.Duplicate()
   at DotNetty.Transport.Channels.Groups.DefaultChannelGroup.SafeDuplicate(Object message)
   at DotNetty.Transport.Channels.Groups.DefaultChannelGroup.WriteAndFlushAsync(Object message, IChannelMatcher matcher)
   at DotNetty.Transport.Channels.Groups.DefaultChannelGroup.WriteAndFlushAsync(Object message)
   at Akka.Remote.Transport.DotNetty.DotNettyTransport.<Shutdown>d__36.MoveNext() in D:\Repositories\olympus\akka.net\src\core\Akka.Remote\Transport\DotNetty\DotNettyTransport.cs:line 532