A browser image released at 14:03 UTC on October 1 causes window.open popups to remain on about:blank while the opening page freezes. Sessions controlled through live view, the computer API, Selenium, or raw CDP are affected.

Playwright and Puppeteer sessions are not affected.

The cause has been identified and a corrected image is being deployed. We expect it to reach production within the hour. Sessions created after the deployment completes will not be affected.

Workaround: if a session is frozen, run the following command against it to resume the popup and the original page.

kernel browsers playwright execute <session_id> 'return 1'

We will post another update once the fix is live.