Oh yeah those are a bear: grammarly, 1password, and darkreader were the big ones, but translation was too. Elm assumes it's the only thing modifying the DOM underneath its root element; the extensions assume the DOM is free to be manipulated. NRI did a writeup on how they fixed it. https://blog.noredink.com/post/800011916366020608/adopting-e... The TLDR is to use https://github.com/lydell/elm-safe-virtual-dom/