Problem with particles not rendering

[ChrPunx]

So…I’m getting this wierd problem with some particles. Any ideas of why?
I’m using soft particles on that blob(explosion effect).
it seems to be cutting itself in the horizon.

[ChrPunx]

As you can see here, the particles seem to get cutted at the wall, even though it hasn’t got there yet.

The fog uses Particle\Vertex-Lit