title: Cannot resume game after pausing
body: <p>I'm having issues resuming my game after pausing. It seems like the code never reads my else statement but I'm not sure how to fix it.</p>
  
  <p>I've tried to use different keys and even clicking to pause/resume. I've also tried to add a function in both the create function and the update loop but I get the same issue from both.</p>
  
  <pre><code>this.input.keyboard.once('keydown_ESC', function () {
      if (game.scene.isActive('default')){
        game.scene.pause('default');
      } else {
        game.scene.resume('default');
      }
  });
  </code></pre>
  
  <p>I expect the game to resume after pressing the esc key a second time.</p>