If stacked, CustomNameVisible:1 doesn't work

If you summon let's say a chicken riding a pig, with the chicken having the nbt data {CustomName:Bob,CustomNameVisible:1}, It doesn't show the name.

Recreate:

Type in a command block:
/summon Chicken ~ ~1 ~ {Passengers:[{id:"Zombie",CustomName:"bob",CustomNameVisible:1,IsVillager:0,IsBaby:1}]}

CustomNameVisible:1 doesn't work.