BREAKING - File upload doesn't work with 2.1.0 release

Steps to reproduce

Tell us about your environment:

• Puppeteer version: 2.1.0
• Platform / OS version: any
• URLs (if applicable): any which shows a file input dialog box
• Node.js version: ~12

What steps will reproduce the problem?

• Run following script

const puppeteer = require("puppeteer");

(async () => {
	const browser = await puppeteer.launch({ headless: false });
	const page = await browser.newPage();
	await page.goto("https://cgi-lib.berkeley.edu/ex/fup.html", {
		waitUntil: "networkidle2"
	});
})();

• Click on the “choose file” button

Expectation: A file chooser dialog will appear Result: Dialog box doesn’t appear End issue: Any upload that requires file chooser dialog breaks. Possible reason: New changes with #5196

NOTE: It works fine with 2.0.0 release.

[gziolo]

I wanted to integrate Puppeteer 2.1.1 but I see that fileUpload still doesn’t work: https://github.com/WordPress/gutenberg/pull/20268#issuecomment-587023772

[zaki-yama]

@mathiasbynens I have a question about the current status. I’m facing this problem in the library that uses puppeteer. It seems related PR (#5369 ) has already been merged, are you going to release the fixed version (v2.1.1?) soon?