**Bug**

**What is the current behavior?**

IE11 Windows 10 text area placeholder not rendering initially.
[https://jsfiddle.net/fztx6vqp/](https://jsfiddle.net/fztx6vqp/)

**What is the expected behavior?**

Placeholder should be visible on initial render.

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

16.0.0, IE11, Windows 10
Appears to be a regression in 16.0.0 - #6731 

return;
    }
    const normalizedClientValue = normalizeMarkupForTextOrAttribute(
      clientValue,
    );
    const normalizedServerValue = normalizeMarkupForTextOrAttribute(
      serverValue,
    );
    if (normalizedServerValue === normalizedClientValue) {
      return;
    }
    didWarnInvalidHydration = true;
    warning(
      false,
      'Prop `%s` did not match. Server: %s Client: %s',
      propName,
      JSON.stringify(normalizedServerValue),
      JSON.stringify(normalizedClientValue),
    );
  };
  var warnForExtraAttributes = function(attributeNames: Set<string>) {
    if (didWarnInvalidHydration) {
      return;
    }
    didWarnInvalidHydration = true;
    var names = [];
    attributeNames.forEach(function(name) {
      names.push(name);
    });
    warning(false, 'Extra attributes from the server: %s', names);