CustomPicker does not work in modern React
Seems like there is a problem with `CustomPicker` higher-order component in React 16+. Can `CustomPicker` be used in React v16?

Works with React v15.6.1
https://codesandbox.io/s/custom-picker-old-react-forked-o9770

Does not work with React v16.12.0
https://codesandbox.io/s/custom-picker-new-react-ur2z4