'fill: "forwards"' causes the element to ignore any future style changes.

[urandom]

Hi,

Using fill: forwards when starting an animation somehow disables all style changes after the animation ends. This can very easily be tested by doing:

$('body').animate([{opacity: 1}, {opacity: 0.3}], {duration: 400, fill: 'forwards'})

and after than ends, running:

$('body').style.opacity = 1

It seems that only the properties that have at some point been part of a forwards animation are 'disabled'. And this occurs in chrome 48 but not firefox 44

[dstoc]

Working as intended. Discussed further in https://code.google.com/p/chromium/issues/detail?id=585463