First of all, ScrollAnywhere works okay for simple websites and if this is what you're usually browsing, go for it. It'll make your life easier.
Now if you browse anything that's heavy on javascript, mixes divs with anchors, incorporates drag'n'drop behavior or does literally anything substandard, ScrollAnywhere won't be able to handle it.
You can find several examples in this video: https://www.youtube.com/watch?v=6_e9rP--sug
