This code should run without errors:

```
#!/usr/bin/env python

import asyncio

async def task1():
    cv = asyncio.Condition()

    async with cv:
        await asyncio.wait_for(cv.wait(), 10)

async def main(loop):
    task = loop.create_task(task1())

    await asyncio.sleep(0)

    task.cancel()

    res = await asyncio.wait({task})

if __name__ == '__main__':
    loop = asyncio.get_event_loop()

    loop.run_until_complete(main(loop))
```

New changeset 17ef4319a34f5a2f95e7823dfb5f5b8cff11882d by Richard Kojedzinszky in branch 'master':
bpo-41891: ensure asyncio.wait_for waits for task completion (#22461)
https://github.com/python/cpython/commit/17ef4319a34f5a2f95e7823dfb5f5b8cff11882d

Thanks for the PR, Richard!

New changeset a3dec9d8ec5ae142946ff6b94947a183d7c48f35 by Miss Islington (bot) in branch '3.8':
bpo-41891: ensure asyncio.wait_for waits for task completion (GH-22461)
https://github.com/python/cpython/commit/a3dec9d8ec5ae142946ff6b94947a183d7c48f35

New changeset 82dbfd5a04863d8b6363527e6a34a90c9aa5691b by Miss Islington (bot) in branch '3.9':
bpo-41891: ensure asyncio.wait_for waits for task completion (GH-22461) (#23840)
https://github.com/python/cpython/commit/82dbfd5a04863d8b6363527e6a34a90c9aa5691b

Yurii no worries, I am happy that this issue is resolved)