If i have in inventory 9 iron ingots (for example), i can't craft a iron block, pressing down Right Mouse Button and filling up all 9 crafting slots.
In begninning all is ok, but after last (#9) ingot placing in last crafting slot (again #9) instead stopping placing ingots all ingots are back to 9X Stack.
In past snapshots i can without problem craft any block, using diamonds/gold/iron/redstone and etc., using pressing down RMB method.