standard output from Process not giving any output for certain commands

async Task OutputToConsole(StreamReader reader, Process process)
{
    var buffer = new char[128];
    while (true)
    {
        var read = await reader.ReadAsync(buffer, 0, buffer.Length);
        if (read > 0)
        {
            var output = new string(buffer, 0, read);
            Console.Write(output);
        }

        if (process.HasExited && read == 0) break;
    }
}