There is a problem with some uld files - especially downlights - when used in suspended ceilings.
As there is a true 3D model added within these files, the point of light emission sometimes lays above or inside the suspended ceiling.
This leads to wrong calculation and bad graphic representations.
By adding a cutout in the ceiling this can be fixed, but is very time consuming.

Is there any chance to fix this automatically with some function?

pic 1 - suspended ceiling with downlights (left with added cutout)

Pic 2 - point of light emission above ceiling