^Tested in survival as well.
Enchanted items will not display what enchantments are on them in their tool tips.
Update: This bug only occurs on items that are enchanted in an enchanting table. If enchants are applied using an anvil they will show their enchant. Using the "/enchant" command does not show the enchantments either.
The problem may actually be that the items aren't actually receiving enchants when enchanted naturally. Rather than the enchants not being displayed. (Someone mentioned item received while fishing may be effected by this as well, which means that it probably effect mobs drops too.)