Whenever your hand is on the last slot and you go into chat, your hand moves to the previous slot.
How to reproduce: Have your hand on the last slot. Go into chat. If you were holding something (specifically, something long like a sword or a stick), you can see your hand switch. Leave the chat, and your hand will be on the second-to-last slot.
Not a major bug, but it'll people throw some people off, especially when using the /enchant command.
This has been happening on both Samsung Galaxy A20 and Samsung Galaxy J3 Prime devices.
Thank you for your report!
We're tracking this issue in MCPE-49117, so this ticket is being resolved and linked as a duplicate.
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