In the Color Organizer, a developer adds a 'Clear All Ratings' button to the App component. When clicked, it should reset every color's rating to 0. They write:

clearAllRatings() {
  this.state.colors.forEach(color => {
    color.rating = 0
  })
  this.setState({ colors: this.state.colors })
}

The button click triggers no visible update. What are the two bugs?