await page.$() hangs forever on puppeteer-firefox

[GuillaumeGomez]

The following code never returns (the element exists):

const x = await page.$("#elem");

However, it works perfectly fine on the chrome version of puppeteer.

OS: linux (ubuntu 19.4)
node: v10.15.2
npm: 6.11.2
puppeteer-firefox: cba0f98 (last commit at the time)

[GuillaumeGomez]

Arf sorry, I thought I was on the puppeteer-firefox repository... Reopening the issue there.

[GuillaumeGomez]

I am on the good repository actually. Sorry for the noise...

[mjzffr]

Thanks for the report. I'm closing this issue since the experimental puppeteer-firefox package is no longer maintained. A replacement will be available
later this year. You can learn more about Mozilla's work on this at https://wiki.mozilla.org/Remote

See also #5137