Much like that bug report once you use ScaleTo above about 5 the clothing reverts to its default scale and is hidden within the avatar’s body. It’s still attached and tries to deform correctly, but of course it’s not at scale.
Adding new layered clothes after ScaleTo doesn’t work either, nor does using BuildRigFromAttachments()
Thanks for the report, we appreciate your patience and support. This is a known issue which is related to the other post you linked, and we are actively working on releasing a fix.
Oooops, I remember I did find the :ScaleTo fix and messaged you about it long ago, but I forgot to update my original thread. My bad.
Still, it would be nice if a fix was made for the HumanoidDescription values. I know it’s marked as fixed, but many games still use those values, as it helps in setting specific proportions for the avatar.