This isn't a bug. The copyright can be set to automatically choose the year, but it does not by default.

However, if the year auto-increments, and there's no new/changed content, you're essentially making a false legal declaration. So based on the legal principle of it, we don't want to make it automatic by default.

How do I do that? I tried searching for it in the admin zone but couldn't find it.

It says in the config option description.

Ah I found it. I had to dig for it. Thanks ^^