Collision does not appear to work in a packaged game after nativizing child assets

Collision does not appear to work in a packaged game after nativizing child assets. Collision appears to change in a package project after setting Nativize assets to Inclusive.

1. Download attached project
2. Open the project
3. Package for windows 64 bit
4. Open packaged project
5. Press the '1' key to spawn an actor
6. Notice that if falls through the floor

Expected: The sphere would collide with the floor as it does in the editor
Result: The sphere goes through the floor

UE 4.15.1 - Nativize blueprint collision bug - Spawning child of a blueprint loses collision settings

UE 4.15.1 - Nativize blueprint collision bug - Spawning child of a blueprint loses collision settings