I suspect that it would have been better in A/B testing as a lot of people probably didn’t realise the hamburger menu would reveal the categories. So it probab

I suspect that it would have been better in A/B testing as a lot of people probably didn’t realise the hamburger menu would reveal the categories. So it probably won due to discoverability rather than usability. So on average more people now navigate the menu, but doing so is a less pleasant experience for those “in the know” before.