Here's a list of things that have not fixed the issue: • manually install chromedriver beforehand • switch to Firefox I only have this problem on Github Actions, locally the tests run through just fine, so the feedback cycle is rather annoying, too... This is the relevant ticket in the Selenium Repo, but I can't figure out how to apply their findings here. https://github.com/SeleniumHQ/selenium/issues/15327

I've rebased a bit, and the problem has disappeared. I still don't know what exactly was going on.