Whenever you launch Minecraft, it tells you you must change your skin, as it is from a content pack not available in multiplayer games. This, however, happens even when your skin is perfectly fine for multiplayer games.
Temporary fix is to just change your skin and change it back.
How to reproduce:
Close Minecraft
Open Minecraft
Join Realm/External Server/ Friend's Server
Issue should come up
If the issue still isn't seen, try again but with step one close it via task manager
Linked issues
duplicates 1
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Thank you for your report! However, this issue has already been reported as MCPE-47180 and as such, will be closed as a duplicate. As a reminder, please search for an issue before creating a ticket for it. Have a great day! 🙂
Thank you for your report! However, this issue has already been reported as MCPE-47180 and as such, will be closed as a duplicate. As a reminder, please search for an issue before creating a ticket for it. Have a great day! 🙂