previously, there was a console error right?. But now, you have to select the text to remove.

Now, in the HelloComponent there is an error. Property 'name' has no initializer and is not definitely

  constructor() {
    this.name = 'test';
  }

Try adding a constructor and it works fine after that. Demo fixed

For the record. It's always a compile or run time error that causes these rich edits to going rouge