[Bug]: future: <Future finished exception=Error('Unknown scheme for Frame.waitForEventInfo')> after upgrading to 1.13.0

[pemocarlo]

Playwright version

1.13.0

Operating system

Windows

What browsers are you seeing the problem on?

Firefox

Other information

Python 3.9.5

What happened? / Describe the bug

Before upgrading from 1.12.1 to 1.13.0, I did not get any error.

Now the following error appears.
future: <Future finished exception=Error('Unknown scheme for Frame.waitForEventInfo')> playwright._impl._api_types.Error: Unknown scheme for Frame.waitForEventInfo

It seems that the responsible command is await page.wait_for_load_state("networkidle") before a page loads when you click on a button.

Code snippet to reproduce your bug

async def minimal_test():
    async with async_playwright() as p:
        browser = await p.firefox.launch(headless=False,)
        page = await browser.new_page()
        await page.goto("https://www.google.com/")
        await page.click("#gbqfbb")
        await page.wait_for_load_state("networkidle")
        await browser.close()

Relevant log output

No response

[rai-gaurav]

Today morning I also upgrade to 1.13.0 and found a lot of similar errors in logs.
I spent quite a time thinking that I have messed up something before finding this issue :P

[mxschmitt]

Closing since cherry-picked to v1.13 branch where we will issue 1.13.1 tomorrowish.