It seems XPU is not emitting light from an emitting volume when "treat as lightsource" is turned on (like for example in the karma fire preset). It does work in CPU. Is there anything that needs to be set in addition to make this work or is this a bug/limitation?

current limitation
https://www.sidefx.com/docs/houdini/solaris/karma_xpu.html#lighting [www.sidefx.com]