[🐛 Bug]: Print preview dialog box is not displayed in selenium chrome headless mode

[sandeshmms]

What happened?

Steps:

1. Navigate to the web application.
2. Click on Print option

Expected Result:
It should display the Print Preview dialog

Actual Result:
Print preview dialog box is not displayed.

Code:

		ChromeOptions options = new ChromeOptions();

		if(headless)
		{
			// Window size increased to overcome the problem of overlapping success messages on transition buttons.
			// options.addArguments("--headless", "--disable-gpu", "--window-size=1000,650");
			options.addArguments("--headless=new", "--disable-gpu", "--window-size=1920,1200", "--start-maximized", "--incognito", 
					"disable-features=NetworkServiceInProcess", "--ignore-certificate-errors");
		}
		
		// Forcing the browser to download the artifacts directly to the tempdir.
		HashMap<String, Object> chromePref = new HashMap<>();
		chromePref.put("download.default_directory", System.getProperty("java.io.tmpdir"));
		chromePref.put("profile.default_content_settings.popups", 0);
		options.setExperimentalOption("prefs", chromePref);
		options.setExperimentalOption("excludeSwitches", Arrays.asList("disable-popup-blocking"));
		
		//Handle SSL certificate issue in the browser.
		options.setAcceptInsecureCerts(true);
		
		options.setProxy(proxy());

		// Open the browser
		WebDriver driver = new ChromeDriver(options);
		
		// Below code is to download the file in headless mode
        ((ChromeDriver)driver).executeCdpCommand("Page.setDownloadBehavior", Map.of("behavior", "allow", "downloadPath", System.getProperty("java.io.tmpdir")));
        
		// Maximize the browser only in windows machine
		if (FileOperations.isWindows())
			driver.manage().window().maximize();

		LOG.info("Browser Version: " + ((RemoteWebDriver)driver).getCapabilities().getBrowserVersion());

		return driver;

		gadgetPage.moveToElement("Gadget.btnGadgetMenu").click().perform();

			String parentWinHdl = driver.getWindowHandle();
			
			// Clicking on the menu option-Print.
			gadgetPage.gadgetMenuOperations("Print");

			Set<String>s=driver.getWindowHandles();
			Iterator<String> I1= s.iterator();
			while(I1.hasNext())
			{
				String childWindow=I1.next();
				if(!parentWinHdl.equals(childWindow))
					driver.switchTo().window(childWindow);
			}
			
			((JavascriptExecutor)driver).executeScript("document.querySelector(\"body > print-preview-app\").shadowRoot.querySelector(\"#sidebar\").shadowRoot.querySelector(\"print-preview-button-strip\").shadowRoot.querySelector(\"div > cr-button.cancel-button\").click();");

Ses the below attachments.
Before clicking on Print:

After clicking on Print:

How can we reproduce the issue?

Since the application is under a corporate network, hence I cannot give the URL.

Relevant log output

org.openqa.selenium.JavascriptException: javascript error: Cannot read properties of null (reading 'shadowRoot')
  (Session info: chrome=131.0.6778.205)
Build info: version: '4.27.0', revision: 'd6e718d134'
System info: os.name: 'Windows 10', os.arch: 'amd64', os.version: '10.0', java.version: '11.0.19'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Command: [82c9f1ae621aed6973ac666560e17918, executeScript {args=[], script=document.querySelector("body > print-preview-app").shadowRoot.querySelector("#sidebar").shadowRoot.querySelector("print-preview-button-strip").shadowRoot.querySelector("div > cr-button.cancel-button").click();}]
Capabilities {acceptInsecureCerts: true, browserName: chrome, browserVersion: 131.0.6778.205, chrome: {chromedriverVersion: 131.0.6778.204 (52183f9e99a..., userDataDir: C:\WINDOWS\SystemTemp\scope...}, fedcm:accounts: true, goog:chromeOptions: {debuggerAddress: localhost:50493}, networkConnectionEnabled: false, pageLoadStrategy: normal, platformName: windows, proxy: Proxy(manual, http=proxy.ro..., se:cdp: ws://localhost:50493/devtoo..., se:cdpVersion: 131.0.6778.205, setWindowRect: true, strictFileInteractability: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: dismiss and notify, webauthn:extension:credBlob: true, webauthn:extension:largeBlob: true, webauthn:extension:minPinLength: true, webauthn:extension:prf: true, webauthn:virtualAuthenticators: true}
Session ID: 82c9f1ae621aed6973ac666560e17918
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
	at org.openqa.selenium.remote.ErrorCodec.decode(ErrorCodec.java:167)
	at org.openqa.selenium.remote.codec.w3c.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:138)
	at org.openqa.selenium.remote.codec.w3c.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:50)
	at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:190)
	at org.openqa.selenium.remote.service.DriverCommandExecutor.invokeExecute(DriverCommandExecutor.java:216)
	at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:174)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:545)
	at org.openqa.selenium.remote.RemoteWebDriver.executeScript(RemoteWebDriver.java:476)
	at com.rc.alm.it.tests.common.jiraGadgets.GadgetMenuVerification.gadgetMenuOptionsVerification(GadgetMenuVerification.java:116)
	at com.rc.alm.it.tests.common.jiraGadgets.JiraApprovalSuccessRateGadget.verificationOFGadgetMenuOptions(JiraApprovalSuccessRateGadget.java:507)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:141)
	at org.testng.internal.invokers.TestInvoker.invokeMethod(TestInvoker.java:686)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethod(TestInvoker.java:230)
	at org.testng.internal.invokers.MethodRunner.runInSequence(MethodRunner.java:63)
	at org.testng.internal.invokers.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:992)
	at org.testng.internal.invokers.TestInvoker.invokeTestMethods(TestInvoker.java:203)
	at org.testng.internal.invokers.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:154)
	at org.testng.internal.invokers.TestMethodWorker.run(TestMethodWorker.java:134)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
	at org.testng.TestRunner.privateRun(TestRunner.java:739)
	at org.testng.TestRunner.run(TestRunner.java:614)
	at org.testng.SuiteRunner.runTest(SuiteRunner.java:421)
	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:413)
	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:373)
	at org.testng.SuiteRunner.run(SuiteRunner.java:312)
	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:95)
	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1274)
	at org.testng.TestNG.runSuitesLocally(TestNG.java:1208)
	at org.testng.TestNG.runSuites(TestNG.java:1112)
	at org.testng.TestNG.run(TestNG.java:1079)
	at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
	at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:293)
	at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:91)

Operating System

Windows, Linux

Selenium version

Selenium version 4.27.0

What are the browser(s) and version(s) where you see this issue?

Chrome version 131.0.6778.205

What are the browser driver(s) and version(s) where you see this issue?

Same as browser version

Are you using Selenium Grid?

No

[github-actions]

@sandeshmms, thank you for creating this issue. We will troubleshoot it as soon as we can.

---

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Thank you!

[diemol]

Please check https://www.selenium.dev/blog/2023/headless-is-going-away/, and if it does not fix the issue, please report it to the Chrome folks.

[github-actions]

Hi, @sandeshmms.
This issue has been determined to require fixes in ChromeDriver.

You can see if the feature is passing in the Web Platform Tests.

If it is something new, please create an issue with the ChromeDriver team.
Feel free to comment the issues that you raise back in this issue. Thank you.

[github-actions]

This issue has been automatically locked since there has not been any recent activity since it was closed. Please open a new issue for related bugs.