Foliage Mode Shadow Casting Issue

[Havoc89]

Hi guys, I made some grass with the meshes set to not cast any shadows so that it blends in a bit better with the ground textures. Now this works perfectly when I place the grass plane meshes normally as a static mesh. However if I use foliage mode to paint in the grass, it does not cast shadows properly. I've rebuilt lighting on production quality and no difference, and this is in July 2012 UDK, the one that was just released.

Here is a screenshot of the problem.