Yes, I’m using this inside of a loop. Adding a proper post id returns the right result.
Now how would I get the proper post id for each item in the loop and return the title and link? I assume it would look something like:
<?php $post_object = get_field('instructor', $post->ID); ?>
<p><a href="<?php echo get_permalink($post_object->ID); ?>"><?php echo $post_object->post_title; ?></a></p>
… but that doesn’t work.