That's a minor thing but when I press the back button on one of the documentation pages it takes 6 seconds to go back (first it changes the title of the tab then it seems to wait for 6 seconds, probably parsing and running several MB of JavaScript). Sometimes the tab titles is blinking and displaying "Evergreen" and "Components - Evergreen" very quickly during these 6 seconds.

You'd think in 2018 going back to a page would be a solved problem, but apparently each new framework needs to re-solve this in a new orignal way.