Wrong step executed in case of similar step definition expression

[Himawari995]

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In case there are steps with similar test definition's expression the wrong one is being picked up and executed. Scenario: sample_scenario.feature:

Feature: Sample steps check

  Scenario: Sample steps check
    Given today is "Monday"
    When something happened
    Then summed "value_1" for each "key_1" of "collection_1" and summed "value_2" for each "key_2" of "collection_2" are equal

test_sample.py:

from pytest_bdd import given, when, then, scenarios, parsers

scenarios('sample_scenario.feature')


@given(parsers.parse('today is "{today_day}"'))
def given_today(today_day):
    print('Today is', today_day)


@when('something happened')
def when_happened():
    print('Something happened')


@then(parsers.parse('summed "{left_values}" of "{left_set}" and summed "{right_values}" of "{right_set}" are equal'))
def compare_summed_values(left_values, left_set, right_values, right_set):
    print('Wrong step used!')
    print('left_values', left_values, 'left_set', left_set, 'right_values', right_values, 'right_set', right_set)
    assert False


@then(parsers.parse('summed "{left_val}" for each "{left_key}" of "{left_set}" '
                    'and summed "{right_val}" for each "{right_key}" of "{right_set}" are equal'))
def compare_agg_summed_values(left_val, left_key, left_set, right_val, right_key, right_set):
    print('left_val', left_val, 'left_key', left_key, 'left_set', left_set, 'right_val', right_val,
          'right_key', right_key, 'right_set', right_set)
    assert True

Actual output - wrong step is executed and four of the arguments from the scenario are passed to two parameters from executed step:

---------------------------------------------------------------- Captured stdout call -----------------------------------------------------------------
Today is Monday
Something happened
Wrong step used!
left_values value_1" for each "key_1 left_set collection_1 right_values value_2" for each "key_2 right_set collection_2
=============================================================== short test summary info ===============================================================
FAILED my-tests/test_sample.py::test_sample_steps_check - assert False
================================================================== 1 failed in 0.30s ==================================================================

Environment info: Python 3.7.4 pytest==6.2.5 pytest-bdd==4.1.0