'The session is not open' in ListDirectoryAsync

On rare occasions, I see 'The session is not open' in ListDirectoryAsync.
The last time I saw it, it was for a server where multiple instances of sftpClient might get created simultaneously with the same username/password, but working with different folders.

SSH.NET 2025.1.0 .Net 9.

My code looks like this:

try
{
    await sftpClient.ConnectAsync(cancellationToken);
	
    await sftpClient.ChangeDirectoryAsync(path, cancellationToken);
    var asyncList = sftpClient.ListDirectoryAsync(path, cancellationToken);
}
finally
{
	if (sftpClient.IsConnected)
		sftpClient.Disconnect();
}

"Type": "System.InvalidOperationException",
"HResult": -2146233079,
"Message": "The session is not open.",
"Source": "Renci.SshNet",
"StackTrace": " at Renci.SshNet.Sftp.SftpSession.SendRequest(SftpRequest request)\r\n at Renci.SshNet.Sftp.SftpSession.GetCanonicalPathAsync(String path, CancellationToken cancellationToken)\r\n at Renci.SshNet.SftpClient.ListDirectoryAsync(String path, CancellationToken cancellationToken)+MoveNext()\r\n at Renci.SshNet.SftpClient.ListDirectoryAsync(String path, CancellationToken cancellationToken)+System.Threading.Tasks.Sources.IValueTaskSource.GetResult()",
"TargetSite": "Void SendRequest(Renci.SshNet.Sftp.Requests.SftpRequest)"

Start at SftpClient.ListDirectoryAsync and trace the reported path through SftpSession.GetCanonicalPathAsync and SftpSession.SendRequest. Try to reproduce the failure with multiple SftpClient instances using the same credentials while listing different folders, and inspect session lifetime around ConnectAsync, ListDirectoryAsync, and Disconnect. Done means the rare 'The session is not open' failure is understood and covered by a reliable test or a documented limitation.