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.

trapClickOnNonInteractiveElement,
            this
          );
        }
        break;
    }
    assertValidProps(this, nextProps);
    var isCustomComponentTag = isCustomComponent(this._tag, nextProps);
    this._updateDOMProperties(lastProps, nextProps, transaction, isCustomComponentTag);
    this._updateDOMChildren(
      lastProps,
      nextProps,
      transaction,
      context
    );
    switch (this._tag) {
      case 'input':
        
        
        
        ReactDOMInput.updateWrapper(this);
        break;
      case 'textarea':
        ReactDOMTextarea.updateWrapper(this);
        break;
      case 'select':
        
        
        transaction.getReactMountReady().enqueue(postUpdateSelectWrapper, this);
        break;