Skin model type bug everytime I open the game

There is a bug with my skin model type. I selected the body model on the right with the big arms, that is my skin model type selection. I do that and select that skin model type. Now when I open the game everytime I want to play, I see my selected skin model type of my skin is changed to the skin model type on the left. I have to constantly change it to the correct skin model type I want all the time.