AioHttp Forever running issue / Session not closing

[Nazar1ky]

OS: Windows 10
Python version: Python 3.13.5
pip freeze output (in venv):

aiohappyeyeballs==2.6.1
aiohttp==3.12.13
aiosignal==1.3.2
attrs==25.3.0
blinker==1.9.0
certifi==2025.6.15
charset-normalizer==3.4.2
click==8.2.1
colorama==0.4.6
Flask==3.1.1
frozenlist==1.7.0
idna==3.10
itsdangerous==2.2.0
Jinja2==3.1.6
MarkupSafe==3.0.2
multidict==6.6.3
propcache==0.3.2
requests==2.32.4
urllib3==2.5.0
Werkzeug==3.1.3
yarl==1.20.1

Code to reproduce:

import asyncio
from aiohttp import ClientSession

async def main():
    proxy = ""
    session = ClientSession(proxy=proxy)

    async with session.get(
        "https://api.ipify.org/",
    ) as response:
        ip = await response.text()
    print("Closing session...")
    await session.close()
    print("Done")
    return ip

asyncio.run(main(), debug=True)

I use proxies, without them the script work, but with proxies I can get response too and print ip
"Closing session..." prints, but "Done" never prints.
I tried a little bit to debug, the issue probably starts with task in await super().close(abort_ssl=abort_ssl or self._ssl_shutdown_timeout == 0)
Let me know if I need provide more details
P.S. Script not throw any errors or timeout.
Well, after investigation, I noticed that this is regression which was introduced in https://github.com/aio-libs/aiohttp/releases/tag/v3.12.4

[Nazar1ky]

Fixed: #11273 (comment)