PyCharm can't find caller of subclass's method that is not implemented in supeclass

class A:
    def bar(self):
        pass

    def foo(self):
        self.bar()
        self.buzz()


class B(A):
    def bar(self):
        pass

    def buzz(self):
        pass

For method, B::bar it finds the correct caller which is A::foo.

But for method B::buzz no caller is found whereas A::foo should be a caller of B::buzz.

I think it has something to do with buzz is not implemented in superclass A.