Morph Targets flicker Randomly in Slave Mesh

When a mesh is slave to a master mesh, its morph targets will flicker when Played in Editor.

This does not occure with the same assets in 4.8.

This has been reported by at least two different users.

UPDATE MattW 12/21/2015: This issue is adversely affecting users who are using the common practice of having a body be a Master Pose Component to a head, clothes, etc. If any of the slave components have morph targets driven by the master, this is going to become a more common problem as people start noticing it.

1. Download test projects located in this rar file: [Link Removed]
2. Open the 4.9 version of "EpicFlickerTest"
3. Play in editor (Selected Viewport)
4. Press and hold down: Shift+F1 so mouse can roll over in-game character
5. Roll cursor up and down at a normal rate over the character (Center, from head to knees)
NOTE: Character's (morph targets) flicker
EXPECTED: No flickering as shown in the following steps:
6. Close 4.9 version and open 4.8 version of "EpicFlickerTest"
7. Repeat steps 3-5 in this version.
NOTE: No flickering occurs