Did a bit more testing on a clean instance with only the Fabric API and Grind Enchantments installed, and found out that it doesn't happen with the default config, but does with my custom one. I'll attach it here so you can test it for yourself.
19.08.2026 21:27:06 Samuel <samuel4el@gmail.com>:
> Op di 4 aug 2026 om 23:53 schreef mschae <contact@mschae23.de>:
>> I just published version 4.2.0 on Modrinth and CurseForge :)
>>
>> It includes support for Flat EXP costs as well as a new
>> "treat_cost_as_points"
>> option, although I would recommend to keep it *disabled* (because that
>> way, the
>> mod will just take the values from flat EXP costs' config).
>>
>> If you have any questions or issues, let me know!
> Hey again, one of our players just found a bug where putting an
> enchanted
> piece of gear in the bottom grindstone slot and a book in the top one
> allows you to transfer the enchantment without having the required xp.
> Could you take a look at this?
Hmm, it shouldn't matter which slot you put the items in (except when
moving enchantments, of course). Are you sure it's not possible the other
way around?
When the enchantment gets transferred this way, what happens? Does the
player's XP just get set to zero?
I'll investigate this as soon as I can, but I'm unfortunately away for a
few weeks right now 😅