Did you use the keyboard or the mouse? Because when I copy using keys, my clipboard is empty. Only right-clicking gives me "not evil". The eventListener is on keydown FYI
In the network panel (in FF), I have a structured view on JSON data, and can expand nested objects and arrays (like here https://mdn.mozillademos.org/files/7421/nm-response-json.png). Same goes for JS objects, which is a thing that bugged me long time.
