"Go to Declaration or Usages" unable to find a function definition in venv\Lib\site-packages\

On another computer installed with the same version of PyCharm, when right click argument "selenium" in function test_login below, and select "Go to Declaration and Usages", it directs to a function definition in file site-packages\pytest_selenium\pytest_selenium.py.

I expect the same behavior on my computer, but it didn't direct. Do the same for function definition in pytest_selenium.py, it is unable to find usages like test_login either.

It's PyCharm 2019.3.1, and have already configured scope to "All Places". Not sure if I missed anything in setting, or did I misunderstood something of the selenium here?

Any inputs will be highly appreciated.

Details of operation:

I was doing a "Go to Declaration and Usages" on:

def test_login(self, selenium, madi_ctx):
    madi_ctx.setup_selenium(selenium)

, was expecting it directs to:

...\selenium-project\venv\Lib\site-packages\pytest_selenium\pytest_selenium.py

@pytest.fixture
def selenium(driver):
    yield driver