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

Bug.

**What is the current behavior?**

Creating an `<input type='submit'` with `value={undefined}` results in a button with no text. https://codesandbox.io/s/nn7p94y3rl

The same behaviour can be seen with `type='reset'`

I have a PR open with a proposed fix. https://github.com/facebook/react/pull/12780

**What is the expected behavior?**

The input should use the browser's default value for the input (Submit for en, etc.).

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

React 16.3.2. Chrome 66.0.3359.139. macOS 10.13.4. Works in React 15 (unsure of earlier versions)

const name = props.name;
  if (props.type === 'radio' && name != null) {
    let queryRoot: Element = rootNode;
    while (queryRoot.parentNode) {
      queryRoot = ((queryRoot.parentNode: any): Element);
    }
    
    
    
    
    
    
    
    const group = queryRoot.querySelectorAll(
      'input[name=' + JSON.stringify('' + name) + '][type="radio"]',
    );
    for (let i = 0; i < group.length; i++) {
      const otherNode = ((group[i]: any): HTMLInputElement);
      if (otherNode === rootNode || otherNode.form !== rootNode.form) {
        continue;
      }
      
      
      
      
      const otherProps = getFiberCurrentPropsFromNode(otherNode);
      invariant(
        otherProps,
        'ReactDOMInput: Mixing React and non-React radio inputs with the ' +