I ran my worst client demo ever a few months ago. It was like our product simply didn’t work. A lot of pulled hair and frustrating debugging later we discovered that a recent update to the 1Password extension broke ours. They were subscribing to an auth event, but not returning, this timed out so our subscriber was never called. So our extension would tell the browser to change proxy servers, then sit ready to provide credentials, but the request would never come. 1Password’s support team was better than grammerly’s, but it’s hard to convince an unknown PM to prioritize something, especially if you’re speaking to them via a support team.
We’ve since discovered that there’s some Russian extension you need for government websites that has the same issue.