Function tribe_next_event_link() in single.php shows a link to the event itself and not to the next event. In the query, $post->ID retrieves actual post’s ID !
Link to past event is good (in the query, $post->ID is correct).
Thanks for the heads up, Julien. This is a known bug – the fix should be included in 2.0.2. Please let me know if upon upgrading you’re not seeing that.