As described in: React App and Chrome DevTools local overrides not working? I tried the solutions described in the above but nothing helps. The react based pages just ignore whatever I modify. When I use overrides on pages that aren't based on react - everything works fine. As an example https://obscure-waters-60500.herokuapp.com/. I tried to modify app/src>App.js by adding hello under NavBar:

render() {
return (
  <div>
    <NavBar
      totalCounters={this.state.counters.filter(c => c.value > 0).length}
    />
    <div>hello</div>
    <main className="container">
      <Counters
        counters={this.state.counters}
        onReset={this.handleReset}
        onIncrement={this.handleIncrement}
        onDecrement={this.handleDecrement}
        onDelete={this.handleDelete}
        onRestart={this.handleRestart}
      />
    </main>
  </div>
);

When I refresh the page everything stays the same. I tried to turn off all addons, but it didn't help.