Data tag Skull Owner is broken in summon command

When you use the data tag skull owner in summon command, the skull apears as a default steve skin

Example:

/summon Zombie ~ ~ ~ {Equipment:[{id:},{id:},{id:},{id:},{id:397,tag:{SkullOwner:Pablomf6,},Damage:3}],}

It shoul be the Pablomf6's skull, but when I summon, it is the Steve's skull.