Yes, I think is an "always on top"-like window, and also forbids to click around under it... but this would only explain the light.sh thing, not why all the other kual apps doesn't show
Ah, with
lipc-set-prop com.lab126.system sendEvent "; sh -c '/usr/bin/light.sh'" in terminal I was not talking about customDialog, so...
It seems that sh code runs in a particular enviroment that is different from the same commands running in kterm for example