Buttons shouldn’t have a hand cursor
There is this belief that the hand cursor means “clickable”, but this is incorrect and…
Users don’t think “this bit is a website, and this bit is not a website”. And in fact the lines continue to blur.
A mobile app often has a web view within it. The user has no idea where the “shell” begins and where it ends. It’s just a tool or service to achieve some goal. Same goes for desktop apps that have web views.