Curing a zombie villager in a minecart will only show and sound the curing effects for a few seconds, the effect will later re-appear.
MC-1881
Zombie Villagers curing in Minecarts do not jitter
Resolved
Fixed
2
(Unassigned)
Confirmed
curing, minecart, zombie_villager
Minecraft 1.4.2, Minecraft 1.4.6, Minecraft 1.4.7, Minecraft 1.5
Minecraft 1.6.2
Retrieved
Is this still an issue in the latest version? If so, please update your ticket.