bug: fa-perspective not being applied to animation in Chrome

``` html

```

``` javascript
$scope.box.rotate.set(-45 * Math.PI/180, {duration: 1200, curve: Easing.inOutExpo});
```

and an fa-modifier

``` javascript
fa-rotate-y="box.rotate.get()"
```

the box will rotate with no perspective applied until chrome (Version 41.0.2272.118 (64-bit)) is resized, resizing chrome before the animation is called makes no difference.

Bug is not reproduced in Safari.