How can I list one category of post links without its child links

Apparently this code should work, but it doesn’t. Is this a bug?
The category is named ‘scoop’ in the Dashboard and here:

$loop = new WP_Query(
	array(
		'posts_per_page' => -1,
		'ignore_sticky_posts' => true,
		'tax_query' => array(
			array(
				'taxonomy' => 'category',
				'field' => 'slug',
				'terms' => array( 'scoop' ),
				'include_children' => false,
			)
		)
	)
);

while ( $loop->have_posts() ) :

	$loop->the_post();

$loop->the_post();  ?>

  <li> <a style='font-size:14px; line-height:1.3m;'
         href="<?php the_permalink() ?>"<?php the_title(); ?>">
         <?php the_title(); ?>
    </a> </li>

endwhile;