[Python] RuntimeError: await wasn't used with future when using twisted, pytest_twisted...

I'm running into the RuntimeError: await wasn't used with future in a simple pytest. I have the pytest_twisted plugin enabled with the argument --reactor asyncio. I can see that twisted is using asyncio and all my twisted tests run fine. However, this code gives me the above error.

async def _sleep():
await asyncio.sleep(1.0)


@defer.inlineCallbacks
def test_sleep():
yield defer.ensureDeferred(_sleep())


It's just a simple test case to see if I can mix asyncio and twisted code together. The full stack trace is as follows:

Traceback (most recent call last):
File "test/test_simple.py", line 23, in test_sleep
yield defer.ensureDeferred(_sleep())
File "/usr/local/lib/python3.10/site-packages/twisted/internet/defer.py", line 1697, in _inlineCallbacks
result = context.run(gen.send, result)
File "test/test_cli.py", line 18, in _sleep
await asyncio.sleep(1.0)
File "/usr/local/lib/python3.10/asyncio/tasks.py", line 605, in sleep
return await future
RuntimeError: await wasn't used with future


Anything obvious jump out?

Twisted: 22.10.0
Python: 3.10.11
pytest: 7.3.1
pytest_twisted: 1.14.0

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