Aliasing ForeignKey fields return integer values, not object

[MikiSoft]

Assuming that Relationship consists of from_person and to_person ForeignKey fields (which point to User), here's an simple example of showing the actual problem:

>> results = Relationship.objects.all().annotate(target=F('to_person'))
>> results[0].from_person
<User: second>
>> results[0].target
3

So, it doesn't work as expected. It should just rename the field, not convert it to the integer type.
The same happens with complex annotations when using conditional expressions (i.e. Case statements). I've even tried like this:

.annotate(
        person= \
                Case( \
                        When( \
                                to_person__in=friends, \
                                then=F('to_person') \
                        ), \
                        default=F('from_person'),  \
                        output_field=ForeignKey('User') \
                ), \
        target= \
                Case( \
                        When( \
                                to_person__in=friends, \
                                then=F('from_person') \
                        ), \
                        default=F('to_person'), \
                        output_field=ForeignKey('User') \
                ) \
)

But it still doesn't work. So that's the reason why I think that this is a bug, as I haven't found any explanation for this behavior. In my case in aliased fields I would need objects to be returned, not only IDs of them, therefore I don't know how to solve this.