This is a very specific bug - however, I would love for someone to show me a workaround! The bug basically consists in IE10 failing to do CSS animation of background-posit
background-posit
You need to put a percentage sign after the zeros. It must be so:
@keyframes move { 0% { background-position: 0%, 0%; } 100% { background-position: 0%, 100%; } }