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Puppeteer in headless mode not allowing to see saved cookies to site?

I got problem with my script where I am logging in to site. I am using puppeteer-extra-plugin-stealth to prevent headless detection.

The code works fine when running with headless: false. But in headless: true is page acting like it does not see the cookies and I am not logged in. When I checked the cookies in both scenarios they are the same so there should be no problem. The cookies are in browser memory.

I could find any solution so far.

My code:

const puppeteer = require('puppeteer-extra')
const {executablePath} = require('puppeteer')
const StealthPlugin = require('puppeteer-extra-plugin-stealth')
puppeteer.use(StealthPlugin())

const browser = await puppeteer.launch({
        "headless": true,
        "ignoreHTTPSErrors": true,
        "executablePath" = executablePath()
      });
const page = await browser.newPage();

await page.goto(url, {
        waitUntil: "networkidle0",
      });

await page.waitForSelector("x");
await page.click("x");

await page.waitForSelector("x");
await page.type("x", username);
await page.click("x");

await page.waitForSelector("x");
await page.waitForFunction(() => {
        const input = document.querySelector("x");
        return input && input.offsetWidth > 0 && input.offsetHeight > 0;
      });
await page.type("x", password);
await page.click("x");

Thanks for any advice.

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