Please fix Flying Chair

Greetings, I just got the Flying Chair and I realized that with all the long clothes (and some short pieces too, like skirts) in the area between the legs, it looks too dark, with a very strange shading, I do not know if it happens with the other races/genres, but it's annoying. Could you fix this please?, thanks in advance.

Apparently it seems that the shadow is incorrectly shown above, when it should be seen below, since below it looks bright but above it see dark.
I leave some screenshots so you can see

Above
https://imgur.com/C7KiVam.png
https://imgur.com/XTTZKyw.png

Below
https://imgur.com/ajjBttk.png