Pytest-parallel executing test case twice

Question

For parallel execution i am using pytest-parallel, it works but each test cases is executing twice

def test_2():
    assert 2==2

def test_3():
    assert 1 == 1

command used

pytest -v -s test_file.py --workers auto

What auto will do like trigger as many workers as tests (each worker per test case)

and the result

collected 2 items
pytest-parallel: 8 workers (processes), 1 test per worker (thread)

testing_parallel.py::test_2 PASSED
testing_parallel.py::test_2 PASSED
testing_parallel.py::test_3 PASSED
testing_parallel.py::test_3 PASSED

tried with --workers 2

collected 2 items
pytest-parallel: 2 workers (processes), 1 test per worker (thread)

testing_parallel.py::test_2
testing_parallel.py::test_3 PASSED
testing_parallel.py::test_2 PASSEDPASSED
testing_parallel.py::test_3 PASSED

Here only test cases are there but execution is twice for each test case