Thanks for the answers, if I know that they are a small problem of the mod and not of the game, I thought someone had a solution.
actually they are two of Shark's mods(Mods:SLEO-SMUI)
I have no way to communicate with him, someone else did it, but he doesn't know how to explain the visual error.
I think the only way would be to remove that option or he or someone made a mod which would not allow zombies to spawn with clothes in those states rolled up and rolled up. But I doubt they will, it would be much more work for him or someone else.
Thanks for the answers.