Incorrect physics interaction on rotated meshes using Complex as Simple collision

Incorrect physics interaction on rotated meshes using Complex as Simple collision.

*This is a regression

Working in 4.13.2-3172292

Not working in 4.14.3-3249277*

User Description:

When we updated our local copy of Unreal Engine from 4.11.3 to 4.14.3 we noticed that sometimes collisions against certain walls would produce incorrect responses.

We created a test project containing one of our complex meshes and fired golf-balls vertically against a slanted surface of that mesh.

The results of this test seem to indicate that this issue is only happening on complex meshes which had been rotated.

1. Open the attached test project
2. PIE
3. Using WASD and the mouse, fly the camera to the 2 golf ball spawners

Results: The ball bouncing off of the rotated Complex as Simple mesh will be bouncing 90 degrees to the side (Video attached).

Expected: For the ball to correctly bounce off of the normal no matter what rotation the object is oriented to (Video attached).