Crazy Grindstone in base Mythic Items with pre applied Mythic Enchantments
I've used a mythic item and i've applied in the code BURNING:1 enchant. Don't mind Burning II (an item has Burning II) i've used it for some experiment.
Literally sometimes Grindstone doesn't remove custom enchants, sometimes yes, it's totally random...
EDIT: Also here, it seems just a visible bug, in fact, even if the lore stills bugged with the enchant display name, the glowing of the sword disappears and the enchant doesn't work anymore
This is the link of the video when i reproduce the bug https://file.io/BB2DjBGfVdwp