id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	focuses
38034	post__in orderby not working when passed in an array to orderby	kelvink	boonebgorges	"


Currently order by `post__in` only works if you pass it as a string. If you pass it inside an array, it won't orderby `post__in` at all.

To reproduce:
{{{#!php
<?php
$query = new WP_Query( array( 
    'post__in' => array( 1,2,3,4,5,6,7,8 ), 
    'orderby' => array( 'post__in' => 'desc', 'title' => 'asc' ) 
));
}}}"	defect (bug)	closed	normal	5.1	Query	4.6	normal	fixed	has-patch