When making a new character skin in character-creator, it will revert back to a Steve or Alex skin after loading the game again or exiting a world.
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Thank you for your report!
We're already tracking this issue at MCPE-32089, so I will resolve and link this ticket as a duplicate.
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This doesnβt seem like the same bug referenced. The bug is Character Creator skins are being deleted. The fact that they become Alex is a byproduct of the deletion. This is just not the same bug as MCPE-32089 which is a bug that is older than Character Creator. 32089 should be closed as that feature is no longer in the game and replaced with Character Creator. ATTN @Celesian

This bug should be reopened and renamed to β*Character Creator* skins getting deletedβ
Updated to the correct duplicate issue, MCPE-53398
The Custom Skin thing either needs to be resolved or removed.