Otto of Rose

Not sure if this is a bug, or misinterpreted requirements, but the potion materials ask for 2 x vial of Rose Otto.

However, I stacked all my Otto of Rose in a bucket, & when crafting a potion it will take 0.02l of Rose of Otto, instead of 2 x 0.01l including the vials.

However, I stacked all my Otto of Rose in a bucket, & when crafting a potion it will take 0.02l of Rose of Otto, instead of 2 x 0.01l including the vials.