Puppeteer Freezes when i put chromium on background , when i get it back to foreground script execution continues

• Puppeteer version: 1.13.0
• Platform / OS version: Mac / 10.14.2
• URLs (if applicable):
• Node.js version: 5.6.0

What steps will reproduce the problem?

Please include code that reproduces the issue.

const puppeteer = require('puppeteer');


let nau = async () =>{
const browser = await puppeteer.launch({timeout:300000,headless:false});
const page = await browser.newPage();
var g =    await page.goto('https://my.naukri.com/Profile/edit?id=&altresid',{timeout:300000});
var there  = await page.$("#usernameField");

//var there2 = await page.$("#emailTxt");
if(there != null)
{
   await page.click("#usernameField");
   await page.keyboard.type("[e-mail]");

   await page.click("#passwordField");
   await page.keyboard.type("9019444140@qQ");

   await page.keyboard.press('Enter');
   await page.waitForNavigation()
    for(var i=0 ; i< 40 ; i++)
    {
    var test = await page.$("#root");
    var h = await test.$(".resumeHeadline");
    var j = await h.$(".widgetHead");
    var k = await j.$(".widgetTitle + span")
    await k.click();
  //  page.waitFor()
    console.log("hello")
    
    await page.keyboard.press('Tab');
    await page.keyboard.type(".");
    await page.keyboard.press('Tab');
    await page.keyboard.press('Tab');
    await page.keyboard.press('Enter')
    console.log("Job Done" + i);
   await page.waitFor((60000*3));
    }
}
else{
    await page.click("#emailTxt");
   await page.keyboard.type("[e-mail]");

   await page.click("#pwd1");
   await page.keyboard.type("9019444140");

   await page.keyboard.type('Enter');

}



}
nau();

What is the expected result? When i run the above script and have chromium in foreground , the script does its intended work , i expect the script to do the same when I put chromium in background.

What happens instead? when i put chromium in background the script flow kind of freezes , until i get chromium in foreground again.

[david-littlefield]

[Solution]:

Add the following values to the array you assign to the args property in the options object. Now, you should be able to run Puppeteer while your window is in the foreground, background, or minimized.

const chromeArgs = [
  '--disable-background-timer-throttling',
  '--disable-backgrounding-occluded-windows',
  '--disable-renderer-backgrounding'
];

Solution and explanation available in an article written by Rohit Kumar, @rkr090 at Big Binary:

Debugging failing tests in puppeteer because of background tab

[szilardx]

For me the previous solution did not worked (Win 10). My hacky workaround is to normalize the Chromium window if it is accidently minimized, then use alt+tab to put it in the background.

I send the windowState: ‘normal’ command through CDPSession, as found here: https://github.com/GoogleChrome/puppeteer/issues/4513#issuecomment-500195352