If the methods `set` and `clear` of `multiprocessing.Event` are called one after another, while a `multiprocessing.Process` calls `wait`, the  `Event` does not match the documented behavior (https://docs.python.org/3.7/library/threading.html#threading.Event.wait) and the call to wait can return `False` even though the call to wait did not timeout (This happens both with `timeout=30` or `timeout=None`).

Attached is a script reproducing this issue.
The documentation should either be changed or the behavior should be updated.