**Do you want to request a *feature* or report a *bug*?**

bug? Maybe.

**What is the current behavior?**

Using non-delegated handler for submit event.

**What is the expected behavior?**

After IE9, at least I know, submit event bubbled up.

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**

16.2.0
);
    
    myDiv = ReactTestUtils.renderIntoDocument(
      <div>
        <div key="theBird" className="bird" />,
      </div>,
    );
    
    myDiv = ReactTestUtils.renderIntoDocument(
      <div>
        <div key="theDog" className="dog" />,
        <div key="theBird" className="bird" />,
      </div>,
    );
    
    myDiv = ReactTestUtils.renderIntoDocument(
      <div>
        <div key="theDog" className="bigdog" />,
        <div key="theBird" className="bird" />,
      </div>,
    );
    const dog = myDiv.childNodes[0];
    expect(dog.className).toBe('bigdog');
  });
  it('throws in render() if the mount callback is not a function', () => {
    function Foo() {
      this.a = 1;
      this.b = 2;
    }
    class A extends React.Component {