SendAsync callback completed boolean true, but no data logged at Server

WebsocketSharp Version: 1.0.2.30210

I'm using the following code in my CLIENT app:

ws.SendAsync("Send this to Server", new Action<bool>((completed) =>
{
  if (completed)
  {
    logSendSuccess();
  }
  else {
    logSendFail();
  }
}));

I have never found that completed == false in my (and my clients) use of websocket-sharp (i.e. logSendFail() is never called).

completed always seems to be true, even times when my SERVER did not receive the message (by inspecting the missing entries of the server logs). I would expect completed to ONLY be true on a SUCCESSFUL completion and false otherwise.

Is this a known issue ? Or has it been fixed in newer versions (I noticed there is a 1.0.3-rc11 on NuGet) ?

Start with the SendAsync implementation and its Action callback contract, then compare callback results with the reported server-log evidence. No test or source file is named in the issue; done means the callback behavior is established and the reported mismatch is resolved or documented.