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

Bug - regression

**What is the current behavior?**

In react 16 when creating a `<select size="3">` (size > 1) the first child <option> is automatically getting marked as selected. In React 16 there does not seem to be a way to specify no <option> gets selected by default

https://codesandbox.io/s/m76ozkwm89


**What is the expected behavior?**

In React 15 unless you marked an option to be selected <option selected> no options were selected by default.

https://codesandbox.io/s/6894m3k9w

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

Reproducible in Chrome 72 and Firefox 59.

**Note:** this is almost a duplicate of #12200. In fact, I copied issue text and codesandbox examples, just changing `multiple` to `size="3"`.
if (expectedHTML !== serverHTML) {
          warnForPropDifference(propKey, serverHTML, expectedHTML);
        }
      } else if (propKey === STYLE) {
        
        extraAttributeNames.delete(propKey);
        if (canDiffStyleForHydrationWarning) {
          const expectedStyle = createDangerousStringForStyles(nextProp);
          serverValue = domElement.getAttribute('style');
          if (expectedStyle !== serverValue) {
            warnForPropDifference(propKey, serverValue, expectedStyle);
          }
        }
      } else if (isCustomComponentTag) {
        
        extraAttributeNames.delete(propKey.toLowerCase());
        serverValue = getValueForAttribute(domElement, propKey, nextProp);
        if (nextProp !== serverValue) {
          warnForPropDifference(propKey, serverValue, nextProp);
        }
      } else if (
        !shouldIgnoreAttribute(propKey, propertyInfo, isCustomComponentTag) &&
        !shouldRemoveAttribute(
          propKey,
          nextProp,
          propertyInfo,
          isCustomComponentTag,
        )
      ) {
        let isMismatchDueToBadCasing = false;