Mechanics Conversion2 should treat Struggle as a Normal-type move in Gens 2-4

[Cazenovia]

What type of bug are you reporting? Mechanics

What is the bug?
In Gens 2-4, despite dealing typeless damage, Struggle is still considered to be a Normal-type move. This means that when a Pokemon hit by Struggle uses Conversion 2 in these gens, the move will succeed and turn the user into a Rock/Ghost/Steel-type. PS! does not have this implemented, and uses the Gen 5+ mechanic of Conversion 2 failing with Struggle.

Are you able to replicate it? If so, how?
Gen 3: Cartridge Footage | PS! Replay
Gen 4: Cartridge Footage | PS! Replay

 

[Hydrametr0nice]

What about Conversion 2 being able to change to a type that the user already has in Gens 2-3? Is this true?
You can use a Dragon-type attack against a Forretress.
Edit: I tested in Gen 4 and it fails, but Bulbapedia says that it should work in Gen 3.

 

[Cazenovia]

What about Conversion 2 being able to change to a type that the user already has in Gens 2-3? Is this true?
You can use a Dragon-type attack against a Forretress.
Edit: I tested in Gen 4 and it fails, but Bulbapedia says that it should work in Gen 3.

Can confirm it works in Gen 3 and fails in Gen 4. Don't have the ability to verify it in Gen 2, unfortunately.

 

[Hydrametr0nice]

https://github.com/smogon/pokemon-showdown/pull/11357

 

[Hydrametr0nice]

Can confirm it works in Gen 3 and fails in Gen 4. Don't have the ability to verify it in Gen 2, unfortunately.

I just set up Pokémon Crystal, Emerald, HG and Black near a Ditto location so I can test some things on my own. It works in Gen 2.