TCP sockets not getting released when disposing SubscriberSocket

[SenseYang]

Environment

NetMQ Version:    4.0.1.12
Operating System: Windows 11
.NET Version:     6

Expected behaviour

I expect the TCP sockets to be released when disposing a Subscriber socket.

Actual behaviour

The process hangs after socket.Dispose() is called.

Steps to reproduce the behaviour

In my code, the subscriber socket will be used this way:

var socket = new SubscriberSocket();
var connectionAddress = $"tcp://{host.EnsureIsNotNullOrEmpty()}:{port}";
socket.Connect(_connectionAddress);
socket.SubscribeToAnyTopic();
var receiveLogThread = new Thread(() => ReceiveLog(host, port));
receiveLogThread.IsBackground = true;
receiveLogThread.Start();

ReceiveLog is implemented:

private void ReceiveLog(string host, int port)
 {
     while (!_socket.IsDisposed)
     {
         string messageReceived = string.Empty;
         try
         {
             messageReceived = _socket.ReceiveFrameString();
         }
         catch (Exception e)
         {
             _logger.LogError(_loggingContext, $"Receiving frame string failed with exception: {e.ToString()}.");
             continue;
         }

         // processing message
     }
 }

And at disposal:

if (!_socket.IsDisposed)
{
    socket.Dispose();
    receiveLogThread.Join();
    GC.SuppressFinalize(this);
}

Expect that the process can exit after Dispose() is called.

With logging in the code, I can confirm that it hangs after calling socket.Dispose().