I have selected an skin and if i enter to one of my worlds in single player, i can see my skin. But if im in a server in multiplayer, i can't see my skin, it changes. If i close minecraft an go to the skins, it shows me that im still with my skin.
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Thank you for your report!
We're tracking this issue in MC-101579, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as invalid. Please take a look at the parent ticket (MC-101579) and see if an explanation is provided there in the description of the ticket or in the comments for why this issue is invalid.
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Is the server you are on a cracked server (
online-mode=false
)?