[BUG] Patchright with user-agent fails to pass Input.cordinatesLeak Brotector

[regseb]

System info

• Playwright Version: 1.49.2
• Operating System: Ubuntu 24.04.1 LTS
• Browser: Chromium
• Other info: Node v22.12.0

Source code

• I provided exact source code that allows reproducing the issue locally.

Test file (self-contained)

• package.json

  {
    "name": "testcase",
    "version": "1.0.0",
    "type": "module",
    "dependencies": {
      "patchright": "1.49.2"
    }
  }

• index.js

  import { chromium } from "patchright";
  
  const test = async (path, args) => {
      const browser = await chromium.launch({
          channel: "chromium",
          viewport: null,
          args,
      });
      const context = await browser.newContext();
      const page = await context.newPage();
      await page.goto("https://kaliiiiiiiiii.github.io/brotector/");
      await page.locator("#clickHere").click();
      await page.screenshot({ path, fullPage: true });
      await context.close();
      await browser.close();
  };
  
  await test("with-user-agent.png", [
      "--user-agent=Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36" +
      " (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36",
  ]);
  await test("without-user-agent.png", []);

Steps

• npm install
• node index.js

Expected

The script should pass Input.cordinatesLeak Brotector with or without the user-agent.

Actual

The script with the user-agent does not pass Input.cordinatesLeak Brotector.

With user-agent	Without user-agent

[kaliiiiiiiiii]

"--user-agent=Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36" +
    " (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36"

The script with the user-agent does not pass Input.cordinatesLeak Brotector.

Overwriding the useragent is detectable and discouraged. The Input.cordinatesLeak does not have any direct correlation with this afaik.

Might be that overriding the UA changes the window size too. What you can try is setting it to Maximized.

This issue will be resolved (only for Python yet) together with Kaliiiiiiiiii-Vinyzu/CDP-Patches#15