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

**What is the current behavior?**

Since React@16.5 seems that `root` element has `onclick` event handler with noop function.
In ios Safari/Chrome browsers html element has gray overlay when tap on it.

The current behavior is that the whole `root` is blinking when we tap on it.

The simple example to reproduce:
https://codesandbox.io/s/wyo8rlj1zk
The issue is reproducing only in fullscreen mode https://wyo8rlj1zk.codesandbox.io/
(root container is steel blue)

I suppose changes came from here:
https://github.com/facebook/react/pull/11927
https://github.com/facebook/react/pull/11927/files

and the issue can be related with:
https://github.com/mui-org/material-ui/issues/11154
https://github.com/facebook/react/issues/12717

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**
React 16.5
ios 11.3/12 Safari/Chrome
export function hydrateInstance(
  instance: Instance,
  type: string,
  props: Props,
  rootContainerInstance: Container,
  hostContext: HostContext,
  internalInstanceHandle: Object,
): null | Array<mixed> {
  precacheFiberNode(internalInstanceHandle, instance);
  
  
  updateFiberProps(instance, props);
  let parentNamespace: string;
  if (__DEV__) {
    const hostContextDev = ((hostContext: any): HostContextDev);
    parentNamespace = hostContextDev.namespace;
  } else {
    parentNamespace = ((hostContext: any): HostContextProd);
  }
  return diffHydratedProperties(
    instance,
    type,
    props,
    parentNamespace,
    rootContainerInstance,
  );
}
export function hydrateTextInstance(
  textInstance: TextInstance,
  text: string,