thread_detach and Windows

Does thread_detach works on Windows? I created a thread with
detached(true), and later called thread_signal(Alias, thread_exit(true)),
but I could still see it through thread_property with status(exited(true))
and detached(false). Other threads that supposedly called thread_detach
manually also showed up, even though they had status(exception(error(_))).

I am trying to understand how to properly shut down threads.

Thanks,
Haitao
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