The advancement "A Furious Cocktail" description says that it requires having all potion effects applied at the same time. This is not true. "A Furious Cocktail" requires that the player had each potion effect at some point, not at the same time. (The "How Did We Get Here" advancement requires having all effects at the same time and it has the correct description.)
This is not true – both require all of their set of effects at the same time.
If "A Furious Cocktail" were to require each effect at some point, it would have a unique criteria for each effect. However, it does not, it simply has one,
all_effects
, which checks for effect change and looks for all of them at once.