Thanks for asking John
When setting multiple post types as options in a Relationship field, tribe_events are not returned when searching posts from the fields. If I select Events to filter the posts, the Event posts do appear but do not save when selected.
If only tribe_events are selected as the possible Post type for the Relationship field, all works as expected. The problem seems to occurs when tribe_event post type is available to the Relationship field alongside other post types.
