Unexpected behavior when use React.forwardRef with React.createContext

[dive2Pro]

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

[gaearon]

I think this might be a bug.

[gaearon]

Should be fixed in React 16.4.
https://reactjs.org/blog/2018/05/23/react-v-16-4.html