example.py hangs

[TimJSwan89]

The example bot stayed alive initially, then it must have changed the state of a file because it no longer works. It just hangs the REPL after logging in. I even replaced the example_plugin.py with a fresh new one and it did the same thing.
I tried pressing CTRL + C to exit, and it doesn't work. I have to close terminal.
OSX El Capitan 10.11.1
I noticed in activity monitor that python is at 100% CPU usage when the bot is stalling.

host-14-218:SpockBot timothyswan$ python3 example.py
[DEBUG]: PLUGINLOADER: Loaded EventPlugin
[DEBUG]: PLUGINLOADER: Loaded ClientInfoPlugin
[DEBUG]: PLUGINLOADER: Loaded WorldPlugin
[DEBUG]: PLUGINLOADER: Loaded TimersPlugin
[DEBUG]: PLUGINLOADER: Loaded NetPlugin
[DEBUG]: PLUGINLOADER: Loaded PhysicsPlugin
[DEBUG]: PLUGINLOADER: Loaded PathfindingPlugin
[DEBUG]: PLUGINLOADER: Loaded MovementPlugin
[DEBUG]: PLUGINLOADER: Loaded InventoryPlugin
[DEBUG]: PLUGINLOADER: Loaded ChannelsPlugin
[DEBUG]: PLUGINLOADER: Loaded InteractPlugin
[WARNING]: CHAT: en_US.lang not loaded, cannot translate chat messages
[DEBUG]: PLUGINLOADER: Loaded ChatPlugin
[DEBUG]: PLUGINLOADER: Loaded ExamplePlugin
[DEBUG]: PLUGINLOADER: Loaded AuthPlugin
[DEBUG]: PLUGINLOADER: Loaded StartPlugin
[DEBUG]: PLUGINLOADER: Loaded RespawnPlugin
[DEBUG]: PLUGINLOADER: Loaded KeepalivePlugin
[DEBUG]: PLUGINLOADER: Loaded EntitiesPlugin
[DEBUG]: PLUGINLOADER: Loaded TaskManager
[DEBUG]: PLUGINLOADER: Loaded CraftPlugin
[DEBUG]: PLUGINLOADER: Loaded TickerPlugin
[DEBUG]: AUTHCORE: Attempting login with username: [email address]
[DEBUG]: AUTHCORE: Logged in as: [username]
[DEBUG]: AUTHCORE: Selected Profile: {'name': '[username]', 'id': '60fe64816c76446885d898b7ad8cb3a1'}
[DEBUG]: NETCORE: Attempting to connect to host: [ip] port: 25565
[DEBUG]: NETCORE: Connected to host: [ip] port: 25565
[DEBUG]: AUTHPLUGIN: Attempting to authenticate session with sessionserver.mojang.com
[DEBUG]: AUTHPLUGIN: Session authentication successful
[INFO]: Chat message received: [03:00:44] <<< (0x03, 0x02): Chat Message                  {'position': 1, 'json_data': {'extra': [{'color': 'yellow', 'text': '[username] joined the game'}], 'text': ''}}

[Gjum]

I could not reproduce this on a vanilla online-mode server, the example runs as expeced.

Although I noticed that the CPU usage is 100% when running the example plugin, but not when running with different plugins. This is definitely wrong and should be investigated.