We are seeing the occasional deadlock when developing. The only active thread is VPSocketIO stuff. <img width="344" alt="screen shot 2017-12-21 at 5 37 10 pm" src="https://user-images.githubusercontent.com/363010/34278755-cc0ec402-e67a-11e7-801b-9ec765ec3d9d.png"> Any ideas how we could help debug this?