Gen 6+ Cotton Spore behaves incorrectly on a target with Overcoat/Safety Goggles/Grass-type

[PhallenTree]

Description

Since Gen 6, Cotton Spore has been a powder move that targets both foes.
Currently powder moves are blocked by Overcoat, Safety Goggles and Grass-types in CANCELLER_POWDER_MOVE, which only checks one target and then ends the action if sucessfully blocked. This means that Cotton Spore may be incorrectly blocked by a single target being immune to powder moves (even if the other is not), or both targets may have their speed reduced despite one of them being immune to powder moves.
Likely solution: Moving this handling to ABILITYEFFECT_MOVES_BLOCK or CanAbilityBlockMove should correctly block effects only on immune targets.

Also the move animation only displays one target being affected even if both are affected.

Version

upcoming (Edge)

Upcoming/master Version

64c5113

Discord contact info

PhallenTree