Im seeing lots of scale issues with timelines. In my case when I have a timeline for an instance that is a child of an object that is playing its own timeline.
My object is a 'tear'(crying)) that animates down a face (which is in turn is animating on its own timeline, moving side to side).
The first time the animation runs it runs fine, but in subsequent run the tear is either scaled inversely or scaled inappropriately. (skinny, fat, inverted or a mix of everything)
I am resetting the timeline each time I play it to time 0. It should be noted that the timeline is one shot repeat once (not looping) and in this example I start the timeline each time I press the spacebar.
Link to video which better explains it here: https://www.dropbox.com/s/npskjsz6r4ggckz/TearBug1.mp4?dl=0
Any ideas?