Hi, I'm creating a simple polygon svg shape, and using it to mask an image using the clip-path:url(#id) method. I'm then trying to animate this using GSAP. This works fine, except in FireFox, where no animation occurs. This can be viewed at this codepen: http://codepen.io/rorytawn/pen/OVeWNB. All I'm trying to animate is simple 2D transforms like x and scale. I know FireFox has some issues with clip-path, so I tried animating the same shape, when it is not used as a mask, and that works fine in FireFox. So the issue is something to do with animating the svg when it is assigned to clip-path. I tried another example using GSAPs AttrPlugin, which does work in all browsers including FireFox. Codepen here: http://codepen.io/rorytawn/pen/MwMbVx. But as far as I'm aware, this won't allow me to animate using css features, rotation, skew etc. If anyone can please point me in the right direction to get the first example to work in FireFox it would be much appreciated! Many thanks!