Is koga returning Koffing intended behavior?

Freef · February 12

Koga's text says it returns weezing to the players hand - but it seems to also return koffing to the field/hand/deck. this effectively gives the player up to four weezings. Is this intended behavior or a bug?

DoubleCure · February 13

Koga returns weezing to the players hand, then you can put it in play if you want to. And yes, in a way it's like you have 4 weezings... that’s the intended behavior.

Freef · February 13

my question is about Koffing - not weezing. Weezing goes back into the hand, but koffing also seems to be playable again. Is intended behavior?

DoubleCure · February 14

https://community.pokemon.com/en-us/discussion/comment/66416#Comment_66416

Yes, it's intended that both Koffing and Weezing go to your hand... and Koffing can be put in play in that same turn, then in next turn can evolve to Weezing.