Will you please provide a screenshot of her at the P size? Is it just her still, or have you noticed it on other characters?
Unfortunately I can’t share a screenshot due to your discord server doesn’t support IOS which is the only thing I can use to access discord. It’s only Mikah , it’s the image part of her breasts that don’t change even when it says it’s reach P Cup as it still looks like her initial cup size when you first interact with her, it say P cup but still looks like her original D cup