Focusout event not triggered when test window is not focused

So, I have a simple Ember component input which has the built-in focusOut Ember event. In an integration test, using ember-test-helpers triggerEvent(input, 'blur') on this input or fillIn(other-input, 'blbl') in another input does not trigger the focusOut event if the window test is not focused while running.

I created a new Ember project to demonstrate this bug (see tests/integration/my-component-test.js), you can check it out here => test-focusout

How to test

1. ember t -s --filter='Integration | Component | my-component'
2. Open dev tools in test window.
3. Click in console and refresh page (click inside test window if you want to re-focusin).
4. Same behaviour when running the test while focusing another window. Reproduced on Chrome 76.0.3809.87 and Firefox 68.0.1

Is that the expected behaviour ?

[rwjblue]

Lets do it!

[rwjblue]

You are suggesting that we would effectively to do:

if (document.activeElement) { 
  await blur(document.activeElement);
}

Inside fillIn / typeIn / click?