Stop receiving events from destroyed child component

When you call $off with just the name of the event, all listeners are removed for the event specified.

Instead, you want to remove the event only for the component that is listening. your component should look something like this:

const component = {
  methods:{
    listener(){
      //do something on event
    }
  },
  created(){
    EventBus.$on('content-type-saving', this.listener)
  },
  beforeDestroy(){
    EventBus.$off('content-type-saving', this.listener)
  }
}

This will remove only the specific listener for the current component.