In the inventory, and when placed, the helmet layer on player heads is offset. When placed, the offset is different, depending on what axis it's placed on.
P.S.: If you think it's my texture pack, I tried turning it off, and the glitch was still there.
Thank you for your report!
However, this issue is a Duplicate of MC-140930.
If you have additional information, please add it to that report.
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