The Zombie Villager skin is wrong when the programmer art pack is on, it's simple to see. The arms don't appear and in the hat place, even if the villager in question does not have one at the moment, there's uncoordinated lines of pixels. The problem extends to version 1.14 .
Environment
OS: Windows 10 Home Single Language - x64 bits
Processor: Intel(R) Core(TM) - i3-6100U CPU @ 2.30GHz
RAM: 4,00 GB
Java 8, (build 1.8.0_201-b09)
In other words, zombie vilager hes don't have hands