Volumetric light disappearing when light source is offscreen...?

[EmperorPete]

I'm trying to light a briefing room; I have a set of overhead spotlights, each with volumetrics turned on. They look great when they're onscreen, but the second the actual lightsource moves offscreen, the entire volumetic effect for that light vanishes totally; not even a hint of the volumetric effect. I've tried adjusting the cone angle for the spotlight, and no joy.
Any thoughts on what could be causing this?

[jameswillmott]

No idea, it's working fine here.

[Skinner3D]

:stumped: I think I was just having the same problem. I fixed it by making the spotlight height double what it actually was. I don't know if this would cause problems in indoor lighting or not.