Playable Director Wrap Mode Not Persisting or Saving Unity v2017.2.0b5

Playable Director Wrap Mode Not Persisting or Saving Unity v2017.2.0b5

A) No Save Mark when Changing Wrap Mode

1. Create a timeline with a playable director and some content

2. Save the project

3. Select the timeline so that the Inspector has the Playable Director component visible

4. Change the Wrap Mode. Say from "None" to "Hold" but the particular values are not important, just the change

5. Note that the Project now is missing the * mark of unsaved work. Saving has no effect

6. I have not been able to determine where the Playable Director wrap mode is in fact persisted to.

B) Wrap mode value is not retained

I need "Hold" for my project. But when I exit Unity and re-enter, the Wrap Mode is set back to None.

I have many Timelines and this problem affects all of them.

This problem is intermittent. Somehow of my 10 Timelines, 1 or 2 of them will persist the Hold value for Wrap Mode. ( I want all 10 to be Hold )

My hunch is that if I manipulate the Wrap mode and make an unrelated change somewhere else in the project then the Wrap Mode has the best chance of persisting between editor sessions