I started up my first Minecraft 1.14 world and did "/locate Village". When I teleported to the village, it was a zombie village, which is great since it's the first time I find one of thiese. Anyway, the zombie villagers all spawned as farmer-zombie-villager which did not seem to have any arms at all... I tried going away to search for a river and went back again, though this time the zombie villagers had despawned, which I believe is not supposed to happen when it's a pregenerated Minecraft zombie village.
A quick summery:
I went to a zombie village where all the zombie villagers were the same type and did not have arms, when they came out of range they despawned.
(I do not have any pictures of the zombie villagers but I suppose you can imagine a zombie villager without arms... WAIT, Do we have ghosts now?)
Are you using the Programmer Art resource pack? If so, one of your issues might be MC-140954.