LightFunction don`t work when lighting translucent objects

Hi, i have some problem. There is a lot of objects with translucency in my scene
They are all in lit mode and lighting mode is surface forward shading mode
I want to light the scene with a light source that using light function
But the light function effect only works on the masked or opaque objects
Translucent objects are illuminated by a light that is not changed by the function
Is this a bug or a limitation of unreal rendering?

First object on picture with masked material, and light function works on it. Second object is translucent and light function don`t works

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Old thread - but Iā€™m interested in this answer. Trying to simulate projectors on scrim-like materials. Thanks!