Collection restricted to single value, the UI is that one of a single field. See how in JSON instance is still a collection / JSON array. Try also to load the instance with two items, it will be displayed as a list (unordered)
Collection restricted to single value, the UI is that one of a single field. See how in JSON instance is still a collection / JSON array. Try also to load the instance with two items, it will be displayed as a list (unordered)