So I'm not sure if Mojang can fix this issue but I have a favorite skin that is the Xmas sweater Steve from the Festive Mash Up 2016 Pack made by Minecraft. This issue still isn't resolved it and there were also the Xmas Sweater 2 Steve that also had the same display issue that shows a glitched out skin and having random color patterns. I'm not sure why it is happening to the Xmas sweater skins while other skins work perfectly normal. If you guys might know the cause I would like to know please or if you guys can solve this issue somehow I would appreciate it and same with others using these skins.