@wedaly what if we will use following code instead:
```python
@step('I clear fields$')
def clear_fields(_step):
    js_str = '''
        $('{selector}')
            .prop('disabled', false)
            .removeClass('is-disabled')
            .val('')
            .trigger('input');
    '''

    js = js_str.format(selector=SELECTORS['url_inputs'])
    world.browser.execute_script(js)

    world.wait(DELAY)
    world.wait_for_ajax_complete()
```
?