**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
});
  it('should allow children to be passed as an argument', () => {
    const argNode = ReactTestUtils.renderIntoDocument(
      React.createElement('div', null, 'child'),
    );
    expect(argNode.innerHTML).toBe('child');
  });
  it('should overwrite props.children with children argument', () => {
    const conflictNode = ReactTestUtils.renderIntoDocument(
      React.createElement('div', {children: 'fakechild'}, 'child'),
    );
    expect(conflictNode.innerHTML).toBe('child');
  });
  /**
   * We need to make sure that updates occur to the actual node that's in the
   * DOM, instead of a stale cache.
   */
  it('should purge the DOM cache when removing nodes', () => {
    let myDiv = ReactTestUtils.renderIntoDocument(
      <div>
        <div key="theDog" className="dog" />,
        <div key="theBird" className="bird" />
      </div>,
    );
    
    myDiv = ReactTestUtils.renderIntoDocument(
      <div>
        <div key="theDog" className="dogbeforedelete" />,
        <div key="theBird" className="bird" />,
      </div>,