The thing that I most hate is when you're approaching a new framework/tool, you follow the official documentation and the first example doesn't work.
I'm trying the official documentation of webpack, I tried the first example and guess! Error! It says that's probably a breaking change. Where the hell should I learn it? I don't have the crystal ball, should I guess how your fucking tool fucking works? Oh my god, it's ok if you introduced breaking changes, but just update all the references, is it so hard?