Needs Triage Bug Report - Mechanics

[BobaFett]

What type of bug are you reporting? Mechanics

What is the bug?
Cloud Nine does not appear to prevent swift swim on the turn the pokemon with cloud nine is being switched in.

See the replay:https://replay.pokemonshowdown.com/gen3orrecolosseum-2523226838-klt08s06qojdtnyehr3nfi7x92hhxfnpw

When Golduck was switched in, electrode should then have gone first because the swift swim should be nullified by cloud nine. Instead, kingdra still went first.

Are you able to replicate it? If so, how?
The replay shows the situation. Turn 1 get rain up and have a pokemon with swift swim. Turn 2 swap in the pokemon with cloud nine and see if swift swim still works.

 

[Hydrametr0nice]

I think that only from Gen 8 onward is the move order updated after every action. In previous gens, the battle order is determined at the beginning of the turn. For example, prior to Gen 8, if a Pokémon uses Tailwind, its partner's Speed is only doubled for move order calculation on the following turn, since that turn's action order was already calculated.