/summon chicken ~ ~ ~ {IsChickenJockey:1b,Passengers:[{id:"minecraft:husk",IsBaby:1b}]}
Use this command at sea
MC-267695
The chicken jockey summoned by the command sinks when it unders the water.
Resolved
Duplicate
0
Duplicates MC-72440, which was resolved as WAI.
Quote from the issue, stating chicken jockeys are affected
> "Mobs riding mobs (spider jockey, chicken jockey, etc.) will dismount underwater. It's difficult to keep them riding each other in wet places."