It seems that there was a problem with Koffing in its shiny version of Pokémon GO, and so we have known from Comic book, who in turn knew it from a Reddit post that was published a day ago at the time of writing this article. And, although a Koffing is an excellent Halloween pumpkin, it seems that it was a little more toxic than it really should be.
The shiny version of Koffing in Pokémon GO had an interesting feature, and although the toxic clouds emitted by the Pokémon seemed smaller before the correction, they also arrived in various colors, which added an extra touch to the creature's design. To the surprise of many, this was only a mistake, and Niantic has already corrected it.
Shiny Koffing’s Gas Emission has finally been fixed. desde r / TheSilphRoad
One theory holds that Koffing is the result of multiple experiments, and considering how toxic it is, they are probably right. In the comments of the Reddit post we can find several users ensuring that the design before correction was better, but there is probably no going back.
What do you think of this correction? Would you have left it as it was?