I've seen similar issues on different platforms so wanted to clarify that it was also happening on Windows 10 edition. Doesn't affect armor itself and isn't gamebreaking.
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[Mod] OcelotOnesie
migrated
Thank you for your report!
We're actually already tracking this issue at MCPE-53105, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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