I don't know if this is an issue with React or IE11 but when an the input initially contains an EN-dash (8211) it fires the change event. 
JSFiddle http://jsfiddle.net/uH539/10/

instance = ReactDOM.render(instance, container);
      var rootNode = ReactDOM.findDOMNode(instance);
      var inst = ReactDOMComponentTree.getInstanceFromNode(rootNode);
      expect(
        EventPluginHub.getListener(inst, 'onClick')
      ).toBe(callback);
      expect(rootNode).toBe(ReactDOM.findDOMNode(instance));
      ReactDOM.unmountComponentAtNode(container);
      expect(
        EventPluginHub.getListener(inst, 'onClick')
      ).toBe(undefined);
    });
    it('unmounts children before unsetting DOM node info', function() {
      var Inner = React.createClass({
        render: function() {
          return <span />;
        },
        componentWillUnmount: function() {
          
          expect(ReactDOM.findDOMNode(this).nodeName).toBe('SPAN');
        },
      });
      var container = document.createElement('div');
      ReactDOM.render(<div><Inner /></div>, container);
      ReactDOM.unmountComponentAtNode(container);
    });
  });
  describe('onScroll warning', function() {
    it('should warn about the `onScroll` issue when unsupported (IE8)', () => {