classic skin option Alex/ Steve Arm option issues

This issue was encountered when i use classic skin (Not the skin creator) i use my own skins for my game well i would use the Steve arm option for my skins then ill play for a bit then ill get off but then when i reload in my game the arms have changed to the default Female alex arms giving my skins a funny look and ill select the Steve arms again then get off the go back in and it resets my skins arms back to the alex arms again.