Both contextmenu/click events fire in Firefox, only contextmenu in Webkit

Question

Chrome fires a contextmenu event, yet no click event for right-clicks. Firefox fires both.

I'm trying to find some official reference or explanation, and I'm surprised I've never come across this yet.

http://jsbin.com/zawifokumu/1/edit?js,console,output

document.addEventListener('click', function(event) {
  console.log('click');
});
document.addEventListener('contextmenu', function(event) {
  console.log('right click');
});
document.addEventListener('mousedown', function(event) {
  console.log('mousedown');
});

Answer 1

It appears that the Firefox people think this is a bug. But not a very important bug, judging from the fact that it's 14 years old now.