Using auto enum values provides incorrect type

[jasperswallen]

import enum


class EnumWithAuto(enum.IntEnum):
    A = enum.auto()
    B = 10


auto_enum = EnumWithAuto.A
print(auto_enum.value.bit_length())  # E1101: Instance of 'auto' has no 'bit_length' member (no-member)

enum_val = EnumWithAuto(123)
print(enum_val.value.bit_length())  # Fine

specific_enum = EnumWithAuto.B
print(specific_enum.value.bit_length())  # Fine

All three of these EnumWithAuto.value should return an int, but only the B and __init__(123) instances do. A (since it uses enum.auto()) seems to return a type of auto, but that should be an int, since this uses an IntEnum.