Chicken stacked Minecart ignoring Attributes - movementSpeed

summon Minecart ~ ~1 ~ {Riding:{id:Chicken, Attributes:[{Name:generic.movementSpeed, Base:3.0f}]}}

When chicken stacked Minecart, it ignore Attributes, movementSpeed.
movementSpeed works well when Chicken stack nothing.
Proof Video : https://youtu.be/AnT9bihLjDA
I cannot get any feedback over 1 year. Bad MODERS.