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**Do you want to request a *feature* or report a *bug*?**
bug
**What is the current behavior?**
example: https://codesandbox.io/s/04393o3k6w
If the `LogProps` is child of `M.Provider`, and `M.Consumer` is used in its children.
When the `M.Provider` is updating, even if the `LogProps` is wrapped in a component that  never updates, it can still be triggered by the callback of `React.forwardRef`, and updates the `LogProps`.

**What is the expected behavior?**
the `LogProps` shouldn't update when the root component had updated, whether or not  `M.Consumer` is used in its children;

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

it's used react@16.3

cancelWorkTimer(workInProgress);
    
    
    switch (workInProgress.tag) {
      case HostRoot:
        pushHostRootContext(workInProgress);
        break;
      case ClassComponent:
        pushLegacyContextProvider(workInProgress);
        break;
      case HostPortal:
        pushHostContainer(
          workInProgress,
          workInProgress.stateNode.containerInfo,
        );
        break;
      case ContextProvider:
        pushProvider(workInProgress);
        break;
    }
    // TODO: What if this is currently in progress?
    // How can that happen? How is this not being cloned?
    return null;
  }
  
  function memoizeProps(workInProgress: Fiber, nextProps: any) {
    workInProgress.memoizedProps = nextProps;
  }
  function memoizeState(workInProgress: Fiber, nextState: any) {
    workInProgress.memoizedState = nextState;