Quite timely with the fixes. Saving and reloading fixes most of the game-breaking bugs, although, as-is, the "knowledge" of what is in the drop-pool for mining isn't saved yet. Also as of 1.21 it still seems like spamming the smelting action can get the dice stuck. Clear the queue then re-open the game, if this happens generally. You don't get refunded the ore, but better than the softlock. Edit: It seems either making the sawblade successfully "removes the furnace," or more likely, reloading (presumably after repairing your furnace) fails to keep your furnace. Can interact the millblade with the table, but while it gives the handsaw, it doesn't change into a different interactable form, giving another handsaw every time you "repair" it.