Real-Time Collision for Spline Mesh Not Working in Packaged Game

When attempting to dynamically set the collision of a Spline Mesh component, the collision settings are not kept in a packaged game.

Found in 4.10.4. Reproduced in 4.11 Preview 6 and Main CL 2877267.

1. Open the attached project
2. PIE
3. Walk into the cube directly in front of the player (notice that the collision is working properly)
4. Package the project for Win64 Development
5. Open the game
6. Walk into the cube directly in front of the character

Result: The cube has no collision

Expected: The cube's collision would be set to BlockAll, as it is during PIE.