Controller has a single key press (RS) that immediately refills your potion belt with 12 potions, following the pattern of the bottom row of potions (i.e. if your bottom row is Health, Mana, Mana, Mana, it will fill all rows like this instantly for 1 button press). This is incredibly powerful in long drawn-out boss fights.
I see no such key press for KB+M, which seems rather unfair. Is there one that I am missing? Could we get one if not?
p.s. I am aware that Shift + left click will move a single potion from inventory to belt, but I am looking for a single press that completely fills the belt.