When joining a co-op game in split screen, other players cannot have saved skins. The customizer does not carry over from when rejoining, and players that are not the host randomly get either Steve or Alex. If they pick a different skin- even if it's not custom- that action is forgotten as soon as they disconnect. Only hosts can save equipped skins.
Related issues
duplicates
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Thank you for your report!
We're actually already tracking this issue at MCPE-58640, 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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