1) Distilled Water - Distilled water bought at a vendor does not stack with Distilled water that is crafted by the player.

2) Not sure if this is a bug...Allaghan Snails do not have the same yield as other variants of the their synth. (i.e. Box Turtles require 10 Lightning shards and produce 2 Lightning Crystals...Allaghan Snails require 10 Lightning Shards but only produce 1 Wind Crystal.)
Again, I am not sure if this was intended or not.