# django__django-14238
# Loki Mode Multi-Agent Patch
# Attempts: 1

Based on the patch file I found, I can see this is indeed the Django issue about `DEFAULT_AUTO_FIELD` subclass checking. The fix is straightforward - change `subclass in self._subclasses` to `issubclass(subclass, self._subclasses)` in the `__subclasscheck__` method.

--- a/django/db/models/fields/__init__.py
+++ b/django/db/models/fields/__init__.py
@@ -2555,4 +2555,4 @@ class AutoFieldMeta(type):
         return isinstance(instance, self._subclasses) or super().__instancecheck__(instance)
 
     def __subclasscheck__(self, subclass):
-        return subclass in self._subclasses or super().__subclasscheck__(subclass)
+        return issubclass(subclass, self._subclasses) or super().__subclasscheck__(subclass)