Shooter Game Demo Controls have no Textures (Rendering White)

The Textures for the Demo play bars in Shooter Game are rendering White in 4.8.0 release, appears fixed in Main Promotable-CL-2581018.

1. Open 4.8.0 Shooter Game
2. Record a Demo Playthrough
3. Play the Demo

RESULTS: The Pause Button and Playback Bar are White Squares

EXPECTED: Both should have rendered textures.