Issues with cargo pants and shoes
I have looked into this. For the old swatches the shirt's mesh doesn't fit the female rig at all, giving her pointy breasts and just a weird fit overall. But what happens for the new swatches is that the rig of the female sim's torso is actually converted into the male rig!
This sim has no customised gender settings, she has all the default female gender settings.
The same thing happens with the other CAS assets that were given new swatches in the recent SDX, but in those cases the problem doesn't give the exact same result.
For the trousers, the old swatches look awful on female sims, they aren't meshed to fit the rig at all, and for the new swatches the female sim's legs convert to the male rig, while the rest of her body continues to have the female rig. This means that the trousers fit perfectly, but instead she loses a part of her torso.
For the shoes we have the same thing happening, for the old swatches on the female rig it's obvious that the shoes aren't meshed for the female rig, and for the new swatches her feet turn into the male rig's feet. In this specific case that isn't a problem at all, instead it means that the new swatches look incredibly good while the old swatches continue to look wonky.
Again, I want to emphasise that the sim I've used for these pictures has NO gender customisation, she's set to female and has all the default female settings.