All the villagers have their basic skin instead of having their job-related skin. It happens whatever texture pack is use.
It’s still possible to interact with them, their levels are still good but it’s complicated to know who is who.
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duplicates 1
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With all in fact. Bug noticed on the vanilla version on the switch of my wife, then confirmed on my world on my switch. Tried to activate several texture packs (bd craft, zigzag, ...) to see if the bug continues, but the problem is the same using the vanilla texture pack or a creator texture pack.
Seems that it’s not properly a skin issue, it’s more like the game didn’t detect that the villager have a job.

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Is this an issue in vanilla (the default global resources with no packs added), or with texture packs created by Mojang/Minecraft?
Issues with packs made by other creators will need to be reported to the packs' creators.