I normally use a custom skin (uploaded both on Android and Windows 10). When I played on my Switch I chose a store skin and now neither Windows 10 nor Android will respect the default custom skin. I can change to the custom skin for the duration of a play session, but every time that I relaunch the app it defaults back to the store skin.
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Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-45476.
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Duplicate of MCPE-45476