Demo: https://mazhuravlev.github.io/effector-react-usestatemap-bug/
- Open Devtools console
- Click "fire Second event", Test component will update. It is subscribed with 'useStoreMap'.
- Unmount Test component with 'Toggle' button.
- Click "fire Second event", warning will be displayed in console: 'Warning: Can't perform a React state update on an unmounted component.'