UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.91 Safari/537.36

Example URL:
https://pfo-18422.dev.upoint.hewitt.com/web/hmorg/client-tooling-login

Steps to reproduce the problem:
package demo1;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.concurrent.TimeUnit;
import org.apache.commons.io.FileUtils;
import org.openqa.selenium.By;
import org.openqa.selenium.Keys;
import org.openqa.selenium.OutputType;
import org.openqa.selenium.TakesScreenshot;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;

public class Headless {

public static void main(String[] args) throws InterruptedException, IOException
{ 

	System.setProperty("webdriver.chrome.driver", "C:\\MyWorkspace\\Demo\\chromedriver.exe");
	ChromeOptions chromeOptions = new ChromeOptions();
	chromeOptions.addArguments("--headless");
	chromeOptions.addArguments("window-size=1280,1696");
	WebDriver driver = new ChromeDriver(chromeOptions);
	driver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);
	driver.get("https://pfo-18422.dev.upoint.hewitt.com/web/hmorg/client-tooling-login");
	Thread.sleep(10000);
	System.out.println(driver.getTitle());

File screenshotFile = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
FileUtils.copyFile(screenshotFile, new File("C:\\Users\\A0705286\\Desktop\\ScreenShot\\first.bmp"));

What is the expected behavior?
It should capture the page screenshot exactly same as it appears.

What went wrong?
It is capturing only white screenshot.

Does it occur on multiple sites: Yes

Is it a problem with a plugin? No 

Did this work before? N/A 

Does this work in other browsers? Yes

Chrome version: 61.0.3163.91  Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: 

I was automating my company's internal site with headless chrome. But it is not capturing screenshot properly.
Same code is working fine with headless firefox and chrome regular mode.