It does reset, because toggling that flag will unmount the old instance of the component, and then mount a new instance. This is the same behavior as has alway

It does reset, because toggling that flag will unmount the old instance of the component, and then mount a new instance. This is the same behavior as has always existed with class components and `this.setState()`. Component-scoped state only exists as long as that specific instance of the component is mounted.