So there is a bug, i guess, that mirrors your part of texture for the left leg if you choose the slim model for a skin (3-pixel arm), as seen in the attached screenshot. Does not affect the gameplay but still kind of annoying.
MCPE-92836
Slim model for skin messes up left leg texture
Resolved
Duplicate
0
Thank you for your report!
We're actually already tracking this issue at MCPE-85749, so I will resolve and link this ticket as a duplicate.
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