Is There a Difference Between Chrome and Firefox?

Some websites say they only work in Chrome, which is what I use. It's annoying to have to switch browsers every time I just use a website but don't get any analytics on that. And also related to metrics and kind of having that internal conversation about prioritization and metrics,. We've run into that a little bit here where somebody at some point mentioned like we're not going to fix this keyboard accessibility bug because it impacts fewer than 5% of our users.