Summoned mobs doesn't have items

In the latest shanopshot, we can't summon entity (hostile mobs) with equipment

for example, this command works in 1.8

/summon Zombie 1 ~ {Equipment:[{id:"iron_axe",damage:0},{},{},{id:"chainmail_chestplate",damage:0},{}]}

But, in 15w38a, the zombie will not have any items

The equipments are not invisible: I've added the DropChances tag (with 100% drop chance), and no item drop