Atempt to open a page with `headless: true` and userDataDir relative path hangs with high CPU load

Steps to reproduce

Tell us about your environment:

• Puppeteer version: 1.9.0-post (chromium_revision 599821)
• Platform / OS version: Windows 7 x64
• URLs (if applicable): any?
• Node.js version: 11.0.0 (or 12.0.0-v8-canary)

What steps will reproduce the problem?

This script is OK:

'use strict';

const puppeteer = require('puppeteer');

(async function main() {
  try {
    const browser = await puppeteer.launch({
      headless: true,
    });
    const [page] = await browser.pages();

    await page.goto('https://example.org/');

    console.log(await page.evaluate(() => document.title));

    await browser.close();
  } catch (err) {
    console.error(err);
  }
})();

This hangs with high CPU load and no error messages:

'use strict';

const puppeteer = require('puppeteer');

(async function main() {
  try {
    const browser = await puppeteer.launch({
      headless: true,
      userDataDir: 'test-profile-dir',
    });
    const [page] = await browser.pages();

    await page.goto('https://example.org/');

    console.log(await page.evaluate(() => document.title));

    await browser.close();
  } catch (err) {
    console.error(err);
  }
})();

[vogler]

Can’t launch just call resolve on userDataDir? Just wondered why my script that ran under macOS didn’t do anything under Windows… Disabled headless and it worked. Then found this. Hangs on navigation: { userDataDir: 'user_data', headless: true }. Workaround: { userDataDir: resolve('user_data'), headless: true }.

[kanxue660]

I have the same problem when i set userDataDir,Very high CPU consumption