The Bug
The clothing of zombie villagers renders through chestplate, leggings and boots.
Create a new ticket since the previous ticket was obfuscated.
Steps to Reproduce:
Summon a zombie villager that is wearing some armor.
/summon minecraft:zombie_villager ~ ~ ~ {ArmorItems:[{id:"iron_boots",Count:1b},{id:"iron_leggings",Count:1b},{id:"iron_chestplate",Count:1b},{id:"iron_helmet",Count:1b}]}
Look at it from different angles.
→ ❌ Notice how the clothing of zombie villagers renders through chestplate, leggings and boots.
Expected Behavior
The expected behavior would be that the clothing of zombie villagers would not render through chestplate, leggings and boots.
Linked issues
Attachments
Comments

I know the helmet and pumpkin head is WAI, but I think chestplate, leggings and boots are a valid issue.
Like MC-130577.

It was still resolved as a feature request. And still, then you tag for review, not immediately clone the report.

MC-130577 was caused by the animation not properly moving the armor model, what you're talking about is the robe element not being hidden when wearing a chestplate/leggings, and the hips armor element not getting "fatter".
Both of those are technically change requests.
I made a little modification so that the ticket is mainly for the chestplate, leggings and boots part.

MC-91283 already did focus on that though, and again, you were told to make a feature request post, not a new report.

MC-127249 was about armor not rendering at all on drowned/drowned not being in the list of mobs to render armor on. It has noterally nothing to do with this.
Um... why did you make this? MC-91283 was resolved as FEATURE REQUEST, and they suggested you make a post for that, not a new bug report...