John Reagan
John Reagan
I can confirm that componentWillUnmount runs before the exception is thrown. There may be some interaction happening with the [dom4](https://github.com/WebReflection/dom4) library. In IE11, dom4 is used for window.removeEventListener. That library...
Little more info, `this.rafHandle` is null when `componentWillUnmount` is called, which is likely why #246 isn't addressing this issue. `this.notifySubscribers` is actually called after `componentWillUnmount`.