Comparing the new texture to the old Pigman texture, it looks like the left leg/arm texture is not mirrored like it used to be, resulting in two right legs/two identical members.
Also happens to the loincloth the piglin is wearing
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This is a duplicate of MC-172250, unless this report is only about zombified piglins.
Jappa
Initially I thought this was caused by the texture being changed to support separate left/right arms/legs, but a quick edit of the texture reveals that the left arm/leg are just reusing the right arm/leg textures.
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