tax_query incompatible with numberposts?

Hi,

I found a problem with get_posts() when I use numberposts AND tax_query in the same query. When I use either indepently I don’t have the problem.

For example I need 6 random posts which have the given category or tag and excluding the current post.

$widget_posts_count = 6;
$post_id = 39660;
$widget_post_type = 'any';
$post_categories_list = array('8');
$term_id_list = array('6462');

$argsPosts = array(
	'numberposts' => $widget_posts_count,
	'exclude' => $post_id,
	'orderby' => 'rand',
	'post_type' => $widget_post_type,
	'post_status' => 'publish',
	'tax_query' => array(
		'relation' => 'OR',
		array(
			'taxonomy' => 'category',
			'field' => 'id',
			'terms' => $post_categories_list
		), array(
			'taxonomy' => 'post_tag',
			'field' => 'id',
			'terms' => $term_id_list
		)
	)
);
$postToDisplay = get_posts($argsPosts);

This is the returned query when I load the page (with both):

SELECT wp_posts.* FROM wp_posts INNER JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) INNER JOIN wp_term_relationships AS tt1 ON (wp_posts.ID = tt1.object_id) WHERE 1=1 AND wp_posts.ID NOT IN (39660) AND ( wp_term_relationships.term_taxonomy_id IN (8) OR tt1.term_taxonomy_id IN (6462) ) AND wp_posts.post_type IN (‘post’, ‘page’, ‘attachment’) AND (wp_posts.post_status = ‘publish’) GROUP BY wp_posts.ID ORDER BY RAND() DESC;

There’s no LIMIT here in returned query, but when I drop the tax_query, I have the LIMIT in the query :

SELECT wp_posts.ID FROM wp_posts WHERE 1=1 AND wp_posts.ID NOT IN (39660) AND wp_posts.post_type IN (‘post’, ‘page’, ‘attachment’) AND (wp_posts.post_status = ‘publish’) ORDER BY RAND() DESC LIMIT 0, 6