Decorated functions do not work with inheritance

I was trying to research how to get the class bound method instead of the function in a decorator and was looking at attrs if it figured it out, but apparently not

>>> import attrs

... @attrs.define
... class A:
...     foo: str = attrs.field()
... 
...     @foo.default
...     def _foo_default(self):
...         return "A"
... 
... @attrs.define
... class B(A):
...     def _foo_default(self):
...         return "B"
... print(A())
... print(B())
A(foo='A')
B(foo='A')  # was expecting `foo='B'` here due to overriding

Have you guys researched this topic and is there any conclusions on this?

Start by reproducing the inheritance example using attrs.define, attrs.field, and the _foo_default methods shown in the issue. Trace how the default is collected for A and B, then establish whether the behavior should change or be documented; done requires an agreed conclusion backed by a regression test or documentation update.