finished Promise not resolving on subsequent animation plays

[danwilson]

The finished Promise resolves as expected after the initial play with Element.animate(). However, it fails to resolve on finishes for subsequent animation.play() calls.

The behavior I am seeing is the Promise does eventually resolve... if you change playState after the animation finishes.

For a demo (with comparisons to onfinish which behaves as expected): http://codepen.io/danwilson/pen/ZQwWKz

Firefox Nightly appears to have the expected behavior implemented (but the polyfill overwrites it). So for an example of what I think the proper behavior is, try the following in the latest Firefox Nightly (and no polyfill): http://codepen.io/danwilson/pen/xZMKGZ

[rachelnabors]

This is actually turning into a major issue for my documentation's demos. :(

[laggingreflex]

Is it/was it resolving at all for you? For me animation.finished is showing undefined related: #33

[TechQuery]

#33 (comment)