`isort` confuses local modules with third-party imports

[Saransh-cpp]

I have the following directory structure:

.
├── a
│   ├── __init__.py
│   ├── numpy.py
│   └── test.py
├── b
│   └── test.py
└── pyproject.toml

with the following pyproject.toml (isort config):

[tool.isort]
profile = "hug"
src_paths = ["a"]
known_first_party = [
    "a",
]

All the files are empty except b.test.py.

b.test.py sorted by isort

from a.test import *
from numpy import array

b.test.py sorted by isort if I rename the sub-module to say numpyi.py (that is, a.numpyi.py)

from numpy import array

from a.test import *

If I explicitly mark numpy as third-party then everything works well. Is this intentional? I would expect the latter output to be the default one, that is, isort should not treat the numpy import as a local import.

[aminechm]

I confirm reproducing the behavior, and I don't know if it's intentional either.

and