I have a similar problem with the back face, (https://codepen.io/albertobellomi/pen/GRZobqw)
1. the back face does not rotate 180 degrees correctly.
2. the background under the back face does not match the background body. I don't understand if it's for the same reason as point 1
can anyone help me to solve these problems?
MOD EDIT: This post was moved from the below thread