I have a boat scheme and I accidentally crafted 9 boats because that was the highest I could make with all the materials I had and the 9 was in the quantity box. I wasn't paying attention when I hit the ok button, but that isn't the issue. XD I lost the stuff for 9, but today when the crafting ended I only got 1 boat.

Thanks for reporting!

The bug is fixed. We returned you materials for other 8 Boats (I suppose that this is more preferrable variant for you than getting 8 Boats :)). Also we changed the default amount of items to be craft to 1 to avoid the confusion in future.

Sorry for the inconvenience.