To reproduce
Run this command
/summon chicken ~ ~ ~ {Passengers:[{id:minecart}]}chickens will automatically slowly moving toward north
The moving speed will not fit the chickens' leg's walking animation.
You can summon a normal chicken or spawn a chicken,but it will move as normal.
Sorry for my bad English.
Thank you for your report!
However, this issue is a Duplicate of MC-38278.
It has been linked to this report. If you have additional information, please add it to that report.
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