Nikolai Mavrenkov already created a good description of the problem on Stack Overflow: http://stackoverflow.com/questions/36893449/textarea-placeholder-isnt-shown-in-ie-11-being-rendered-using-react

I just can confirm it breaks in IE11, but works in IE10 (and other browsers) with React v15.0.2.

var inst = this;
  
  
  invariant(inst._rootNodeID, 'Must be mounted to trap events');
  var node = getNode(inst);
  invariant(
    node,
    'trapBubbledEvent(...): Requires node to be rendered.'
  );
  switch (inst._tag) {
    case 'iframe':
    case 'object':
      inst._wrapperState.listeners = [
        ReactBrowserEventEmitter.trapBubbledEvent(
          'topLoad',
          'load',
          node
        ),
      ];
      break;
    case 'video':
    case 'audio':
      inst._wrapperState.listeners = [];
      
      for (var event in mediaEvents) {
        if (mediaEvents.hasOwnProperty(event)) {
          inst._wrapperState.listeners.push(