Bug in perch_blog_custom when matching by 'lt'

Perch 2.8.13

Using the following code I expect a single post that has a postDateTime < current post to display:

$postData = perch_blog_custom(array(
    'filter' => 'postSlug',
    'match' => 'eq',
    'skip-template' => true,
    'value' => perch_get('s'),
));

$postDateTime = $postData[0]['postDateTime'];

$prevPost = perch_blog_custom(array(
    'count' => 1,
    'filter' => 'postDateTime',
    'match' => 'lt',
    'sort' => 'postDateTime',
    'sort-order' => 'DESC',
    'template' => 'blog/post_prev.html',
    'value' => $postDateTime,
), true);

However, this returns the current post.. (the expected behaviour with a match value of 'lte'). This code used to function as intended, and Drew documented the same approach to displaying prev/next links in Blog here.

Adding 'paginate' => false and 'start' => 2 to the above code works as a workaround, but paginate is absent from the docs for perch_blog_custom so this was difficult to track down.