Our main hand is shorter than before. I can't find an old version for the photo but there is an example with java edition.
On java edition main hand is normal(long). But on bedrock edition it's short and that's a bug.
Skins are same.
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Yes hand is shorter. It has to be longer normally like java edition. It's not functional, it's an annoying bug.

Thank you for your report!
We're tracking this issue in MCPE-47877, so this ticket is being resolved and linked as a duplicate.
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What do you mean: hand looks shorter or bug is also functional?