Procedural foilage spawner collision?

I used the tutorial on the UE4 wiki to create a foilage spawner, works great, all of my trees are spawning good and spaced out how i want, problem is…my tree’s dont have any collision, the static mesh thats being used in the foilage spawner does have collision, just wondering is this a bug? or am i not doing something im supposed to?

anyone know?

For anyone coming in here, The foliage procedural spawner is (as I understand) meant to be used as a background factor and/or for optimizing non-collision meshes.

Whenever enabling collision on the spawner, the collision will go around all of the boxes, and not the meshes themselves.