Example: If chat key is 't' then sometimes it adds the letter 't' to the chat bar itself and if you forget to remove the character then you can end up with things like 't/help' or 'thello'.
Linked issues
Comments 3
That isn't an issue with minecraft itself. Accidentally double tapping a key or having a sensitive/malfunctioning keyboard is not a bug with minecraft.
Please do not mark unreleased versions as affected.
You don't have access to them yet.