Currently, if you have a Storyboard with a limited amount of keyframes, but its set to 'Repeat On', when scrubbing the Timeline, it will play animations that are technically not part of the Timeline in question.

When scrubbing back and forth on a Timeline, it should not animate Elements that are not actually animating in the Timeline in question.

See attached video.

In this case, once the second keyframe is past, it should hold that last keyframe, and not loop the internal animation over and over again.
There is an argument for looping animations from other Storyboards in the context of a Page (to for example help sync two Storyboards) -- but in the context of the internals of a single Storyboard, this is somewhat unexpected behaviour.

Repro Steps:

1) Download and open the attached Studio Project.

2) In the Navigator, identify the UserControl named "TopographicPattern_UserControl" (found under the "Foreground_Group_Grid" Grid under the RootGrid.

3) Enter the TopographicPattern_UserControl's context menu, and open the UserControl's Template for Edit
This will then open in the dummy Template Editor.

4) Within the UserControl Template, navigate to the Animation/Storyboards Panel, and select the Storyboard named "TopoPattern_Animation".
This will open the Timeline, where you will see 60 Paths with their Opacity values keyed.

5) Scroll down in the Timeline until reaching Path29.

6) Using the Playhead, scrub back and forth between 0s and 5s.

Observe how the animation being played between 0s and 0.500s is playing over and again over the course of 5 seconds even if it is normally only supposed to play between 0 and 0.500s.

Expected Results: In the context of a Storyboard, animations that aren't physically present shouldn't play.