[MC-111398] Passengers tag doesn't work with boat in Minecraft 1.11

Passengers tag doesn't work with boat in Minecraft 1.11
But other tags works perfectly. For e.g:

/entitydata @e[tag=boat2] {Type:"dark_oak"} - works
/entitydata @e[tag=boat2] {Passengers:[{id:"pig"}]} - doesn't work

Comments 3

You can't spawn an entity using /entitydata.

So how I can edit entity in the boat?

You can spawn the boats with passanger using /summon.
Or simply drive the boat into the pig.