This bug has been confirmed by the hive server here: https://updates.playhive.com/skin-switching-bug-in-latest-minecraft-update-4qHjos

This bug maybe Happening too other servers and this bug is only happening on the players own skin/game-side

There are ways to produce this bug like from MCPE-165986 if you equip a cape on the hive you will turn into a steve,Equipping a costume on the hive will have no changes on the skin,Playing as the hider on hide and seek on the hive has the same result "no changes on the skin" Expected result will be like the other hiders (became a block) and playing as the death on Deathrun will have the same occur "no changes on the skin" Expected result will be like the other death