Well i already know 1.20.10 release but there is a issue in servers where in The Hive and other different servers if you change the skin once your hotbar would disappear and if you change it again then you will get a black screen, to fix it, you need to leave the server and hop back in, it does not affect your minecraft worlds.
MCPE-173143
Black Screen Bug
Resolved
Invalid
0
Thank you for your report!
However, this issue is Invalid.
Unfortunately we don't accept issues related to External Servers here on the bug tracker, but please add more details if you think this also affects multiplayer over Realms, LAN, or XBL.
I'd suggest contacting the server owner directly or seeking help on the Minecraft forums.
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