I was in an instance with a friend attempting to get achievements for living story. I consumed the Bloodstone Pie before even entering the fireplace and had the little yellow icon that showed I was eligible for credit.
We completed the entire instance and I had the food buff the entire time. However, I only got credit for “Distorted Reflection”, not the “No Culinary Application.”
The only thing I can think of is that my friend started the instance and had not consumed the pie as he already had the achievement.