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/

ReactDOM.render(<div onClick={null} />, container);
      expect(SimpleEventPlugin.didPutListener.mock.calls.length).toBe(2);
      expect(SimpleEventPlugin.willDeleteListener.mock.calls.length).toBe(1);
      ReactDOM.render(<div />, container);
      expect(SimpleEventPlugin.didPutListener.mock.calls.length).toBe(2);
      expect(SimpleEventPlugin.willDeleteListener.mock.calls.length).toBe(1);
      ReactDOM.unmountComponentAtNode(container);
      expect(SimpleEventPlugin.didPutListener.mock.calls.length).toBe(2);
      expect(SimpleEventPlugin.willDeleteListener.mock.calls.length).toBe(1);
    });
    it('should warn for children on void elements', function() {
      var X = React.createClass({
        render: function() {
          return <input>moo</input>;
        },
      });
      var container = document.createElement('div');
      expect(function() {
        ReactDOM.render(<X />, container);
      }).toThrow(
        'input is a void element tag and must not have `children` ' +
        'or use `props.dangerouslySetInnerHTML`. Check the render method of X.'
      );
    });
  });
  describe('updateComponent', function() {
    var container;
    beforeEach(function() {
      container = document.createElement('div');
    });