Halo settings doest matter. If there is grass there is bug. 
And halo just renders in the back how to fix this?
dumb forum rule… h ttp://matrep.parastudios.de/index.php?action=view&material=740-grass&fc=10 using this material.
Hi wolas.
I cannot check the example, (Access denied), so I am “running blind”.
Is it a bug?
Halos are blocked by objects that are between the camera and the halo, (on purpose).
If you do not want the halo to be hidden at all, then place the halo in front of all the objects in the scene and scale the halo down if necessary.
If that does not help. Place the halo on another layer, (scene layer), and pass the whole render through the appropriate node setup, (you could use alpha over, but I am not sure if this would react with the alpha already native to the halo).
Hopefully others will also have ideas to help you, but at least this is a start.
Regards.
cig.