only choose the ones that are defined in the same module

reflex/ivars/base.py

@@ -1506,13 +1506,18 @@ class ImmutableComputedVar(ImmutableVar[RETURN_TYPE]):
             class_where_defined = cast(
                 Type[BaseState],
                 min(
+                    filter(
+                        lambda state: state.__module__ == self.fget.__module__,
                         filter(
                             is_not_mixin,
                             filter(
-                            lambda state: contains_class_name(inspect.getmro(state)),
+                                lambda state: contains_class_name(
+                                    inspect.getmro(state)
+                                ),
                                 inspect.getmro(owner),
                             ),
                         ),
+                    ),
                     default=owner,
                     key=length_of_state,
                 ),