This is most often the case with the Helmet model as it will not change to e.g. the Programmer Art texture.
Perhaps the cause might be that the Piglin's head is wider.
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migrated
MC-172354
Piglins stuck with the default texture on some armor models upon switching texture packs
Resolved
Duplicate
0
migrated
migrated
(Unassigned)
Confirmed
(Unassigned)
20w07a
Retrieved
Duplicate of MC-169889. Seems like piglins have seperate texture for golden helmets and new texture won't be ported to the older ones.