Actor leaves behind ghost collision when detached and simulating physics

Actor leaves behind ghost collision when detached and simulating physics. The collision doesn't show when 'Show Collision' is enabled but from the physics simulation it is clear that a collision box still remains in the attached location.

1. Open the attached test project
2. PIE
3. Once loaded, Press the F-key to detach one of the cubes and simulate physics

Results: The 2 cubes will fall and will collide with the floor as if the 3rd cube was still attached. The 3rd cube will still have correct collision around the mesh.

Expected: For the 3rd cube to not leave behind a 'ghost' collision when it is detached using this method. Open 'ManageBP' to see the BP setup.