[1.16 regression] Incompatible types error when using Enums of a NamedTuple

[pcavalar]

Bug Report

Seeing this regression on mypy 1.16 with Enums of NamedTuples values.

Note: Enums of plain classes or dataclasses work as expected.

To Reproduce

https://mypy-play.net/?mypy=1.16.0&python=3.13&flags=strict&gist=2c5d8ca22757aee67d917d8fec20ad7f

from enum import Enum
from typing import NamedTuple

class Foo(NamedTuple):
    pass

class FooEnum(Foo, Enum):
    ITEM = Foo()

foo: Foo = FooEnum.ITEM  # works on 1.15 but not 1.16

Actual Behavior

error: Incompatible types in assignment (expression has type "FooEnum", variable has type "Foo")  [assignment]

Your Environment

• Mypy version used: 1.16
• Mypy command-line flags: defaults
• Mypy configuration options from mypy.ini (and other config files): none
• Python version used: 3.13

[A5rocks]

cc @sobolevn