Beta item creation calculations

I'm used to the numbers next to an item in the crafting screen displaying the number of times I can craft an item but right now it appears to show the total number of items not the number of items I can craft it

example 

I have three cobble and it shows a six next to the slab recipe not the lack of number that signified one. At first I thought it wasn't crafting the correct number of items but now I can see that it seems to be displaying incorrectly