**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
return;
    }
    didWarnInvalidHydration = true;
    const names = [];
    attributeNames.forEach(function(name) {
      names.push(name);
    });
    warningWithoutStack(false, 'Extra attributes from the server: %s', names);
  };
  warnForInvalidEventListener = function(registrationName, listener) {
    if (listener === false) {
      warning(
        false,
        'Expected `%s` listener to be a function, instead got `false`.\n\n' +
          'If you used to conditionally omit it with %s={condition && value}, ' +
          'pass %s={condition ? value : undefined} instead.',
        registrationName,
        registrationName,
        registrationName,
      );
    } else {
      warning(
        false,
        'Expected `%s` listener to be a function, instead got a value of `%s` type.',