Appears to be working in Firefox but at least Chrome & Safari are broken. Should be a really recent regression so very few possible changes to blame...

Easiest repo: the todo list on our homepage.

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');
    });