DownloadFile hangs after downloading file

In the following example, only the "Begin download" console log is written. It successfully downloads the file, but never moves beyond the line with DownloadFile. No errors are thrown, and nothing shows up using the new logging with LogLevel.Trace.

If I add a downloadCallback to DownloadFile, that is called, yet it still never moves forward from that line.

Any ideas what could be happening?

using var sftp = new SftpClient("host", 123, "username", "password"));
sftp.Connect();

using (var fileStream = File.Create(@"C:\target\local\path\file.zip"))
{
    Console.WriteLine("Begin download");
    sftp.DownloadFile("/source/remote/path/file.zip", fileStream);
    Console.WriteLine("End download");
}

Console.WriteLine("Done");

Start with the provided C# reproduction and the SftpClient.DownloadFile call, including the optional downloadCallback and LogLevel.Trace behavior described in the issue. Determine why the call does not return after the file downloads; done means the example reaches the “End download” and “Done” console logs without errors.