When your inventory is full, if you cancel an ore that is smelting the item shows that it is no longer in the furnace, but it will not show up in your inventory (since it’s full), essentially you lose the item completely.
When your inventory is full, if you cancel an ore that is smelting the item shows that it is no longer in the furnace, but it will not show up in your inventory (since it’s full), essentially you lose the item completely.