find doesnt find button which is clearly in dom when testing ember view

Hey I have following problem with qunit acceptance test:

test('', assert => {
  selectSearch('.address-lookup', '359 Paterson Road');
  fillIn('input.mailing-address-city', 'Arlington');
  fillIn('input.mailing-address-postal-code', '76002');


  andThen(() => {
   const discoverDriverBtn = find('.discover-driver-button')
   click(discoverDriverBtn);
  });
})

button .discover-driver-button is in template in if statement whe all inputs are filled

I see this button in qunit preview when running test and after stopping it I can find it in console

yet test is failing with message:

Error: Element [object Object] not found.

when I deleted if from view and displayed button all time the test passed

I think it might be connected somehow with run loop