Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Help/Tips/Tricks Potions not combining

I am trying to combine magical armor potion and air resistance potion, but nothing is happening

Also, I'm trying to combine an Air Resistance Potion and a Water Resistance Potion to get some empty potion flask and that isn't working either

I should also add the the potions are not large or anything, just "air resistance potion" and they are both the same (30%)

Small, medium and large Air Resistance Potions are all named the same, but have bonuses of 15, 30 and 50%; only the small potions work to create an invisibility potion. The Magical Armour Potions also all have the same name, with boosts of 32, 84 and 126.

To get empty potion flasks, you can combine air / earth or fire / water (small only).

Not sure what the rationale was for only allowing the small potions to be combined? Logically, like sizes should be able to be combined, no?

Sorry, I am sure this horse has already been beaten to death.

I don't know; maybe it was done for balancing reasons, maybe to keep the number of combinations within reason, or maybe an oversight.