CustomName tag not showing a name tag on all entities.

In snapshot 14w21a, the capability to use CustomName and CustomNameVisible tags was added for all entities.

In 14w27b, the Item entity is being named, as displayed when using /say @e but the name tag is not visible under any circumstance.

Here is the command I am using.

/summon Item ~ ~-1 ~ {CustomName:Enchanting,Age:-32768,PickupDelay:32767,Item:{Count:1,id:enchanting_table,Damage:0}}

This command functions correctly and as expected in versions 14w21a and b.