<!--
  Note: if the issue is about documentation or the website, please file it at:
  https://github.com/reactjs/reactjs.org/issues/new
-->

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

Bug 

**What is the current behavior?**

React DOM crashes when `<option>` contains three interpolated value if one is a conditional. 

Reproduction: https://jsfiddle.net/0opjvycp/ 

1. Change the value of the `<select>`
2. React crashes with `NotFoundError: Node was not found` 

From what I can tell, the conditional value is necessary, and it must be three interpolated values. 

**What is the expected behavior?**

React should not crash. 

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

React DOM 16.2 and 16.0. I think this worked in 15.6 - https://jsfiddle.net/mrwkmuqc/ does not crash 

<option key="gorilla" value="gorilla">
          A gorilla!
        </option>
      </select>,
      container,
    );
    expect(node.options[0].selected).toBe(false); 
    expect(node.options[1].selected).toBe(false); 
    expect(node.options[2].selected).toBe(false); 
  });
  it('should warn if value is null', () => {
    expect(() =>
      ReactTestUtils.renderIntoDocument(
        <select value={null}>
          <option value="test" />
        </select>,
      ),
    ).toWarnDev(
      '`value` prop on `select` should not be null. ' +
        'Consider using an empty string to clear the component or `undefined` ' +
        'for uncontrolled components.',
    );
    ReactTestUtils.renderIntoDocument(
      <select value={null}>
        <option value="test" />
      </select>,
    );
  });
  it('should warn if selected is set on <option>', () => {
    function App() {