[Bug]: Incognito Proxy doesn't work

[UchihaYuki]

Bug description

The following work:

const browser = await puppeteer.launch({
    headless: false,
    defaultViewport: null,
    args: ["--proxy-server=http://localhost:8001"],
    userDataDir: "user-data-dirs/rotate-proxy",
  });

But the following doesn't work

const browser = await puppeteer.launch({
    headless: false,
    defaultViewport: null,
    // args: ["--proxy-server=http://localhost:8001"],
    userDataDir: "user-data-dirs/rotate-proxy",
  });
  const context = await browser.createIncognitoBrowserContext({
    proxyServer: "http://localhost:8001",
  });
  const page = await context.newPage();

The traffic doesn't go out through the proxy.

Puppeteer version

13.0.0

Node.js version

v16.13.1

npm version

8.1.2

What operating system are you seeing the problem on?

Windows

Relevant log output

No response

[iJoris]

Having the same problem, seems to be going wrong after 10.2

[stale]

We're marking this issue as unconfirmed because it has not had recent activity and we weren't able to confirm it yet. It will be closed if no further activity occurs within the next 30 days.

[118set]

Not working for me either on 15.4.0

[stale]

We're marking this issue as unconfirmed because it has not had recent activity and we weren't able to confirm it yet. It will be closed if no further activity occurs within the next 30 days.

[OrKoN]

Unfortunately, this does not work on Windows due to a bug in Chromium. We already have an issue tracking this: #8820 so closing this one in favour of the confirmed issue.