using AnimationMixerPlayable() causes Windows Player to crash on exit

As title, this line:

AnimationMixerPlayable Mixer = new AnimationMixerPlayable();

causes a Windows build to crash on exit. Added to Bug tracker:

https://fogbugz.unity3d.com/default.asp?759783_29f7e8mv1331ml6j

Happens on both my machines, anyone else see this? Tested with 5.3.1f1.