uasyncio: KeyError in `remove_reader` (MacOS)

uasyncio version 1.2.4
I'm using it in a pretty common way:

        loop = asyncio.get_event_loop()
        print("* Starting Web Server at {}:{}".format(host, port))
        loop.create_task(asyncio.start_server(self._handler, host, port, backlog=backlog))
        if loop_forever:
            loop.run_forever()
            loop.close()

Sometimes (probably when connection is closed from client side) I see exception:

Traceback (most recent call last):
  File "./esp_restapi.py", line 53, in <module>
  File "./esp_restapi.py", line 49, in run
  File "/Users/belyalov/.micropython/lib/tinyweb/server.py", line 320, in run
  File "/Users/belyalov/.micropython/lib/uasyncio/core.py", line 136, in run_forever
  File "/Users/belyalov/.micropython/lib/uasyncio/core.py", line 113, in run_forever
  File "/Users/belyalov/.micropython/lib/uasyncio/__init__.py", line 39, in remove_reader
KeyError: 4339811008

Start with uasyncio/init.py around remove_reader and trace how it is called from uasyncio/core.py in run_forever. Reproduce the MacOS connection-close case using the reported server pattern and uasyncio version 1.2.4. Done means the client-side close no longer raises KeyError 4339811008.