100% CPU load after cancel about anyio HOT 13 OPEN

#!/usr/bin/env python3
from anyio import CancelScope, create_task_group, run, sleep


async def shield_task() -> None:
    with CancelScope(shield=True):
        await sleep(60)


async def task() -> None:
    async with create_task_group() as tg:
        tg.start_soon(shield_task)


async def main() -> None:
    async with create_task_group() as tg:
        tg.start_soon(task)
        tg.cancel_scope.cancel()


run(main)