Health and Mana Potion Bug

There seems to be a bug with the healing and mana potions. The higher tier potions give less health points than the lower tier ones (I have attached the potions and there values below)

Minor Healing Potion heals for 88 health
Lesser Healing Potion (req lvl 2): 122 health
Healing Potion: 75 health (heals less than lesser healing?)
Greater Healing Potion: 75 healing req lvl 10.
Superior Healing Potion: 114

This also applies for the mana potions as well (lesser mana potion- restores 190 mana but the higher tear regular mana potions only restore 120)

Yeah I noticing this too. Though the values I am getting are different.
What is going on here?! This is crazy! Why would the devs make a change to these things that make, suppose to be better item, weaker then its earlier kind?
I am also seeing some strange things like all the buff potions adding only “1” to the stat, no matter what higher tier level the potion is.