[devista]

If you have an object with a material with displacement add grass, copy it and do a mirror in X axis (or Y) the grass appears in the down side in the render, in the screen it look ok. If you don´t have displacement looks ok.
Sorry for my very poor english

saludos
luis

[Mihnea Balta]

Confirmed. It looks like an engine bug, I'll report it to the people in charge.

[devista]