ok, so I made FP of grass. I wanted to add it as a preset in the library. I made everything according to the official tutorial from Itoo.
However, when I try to render the grass, it is not there.
According to the stats. There are some items. I can see them in the viewport.
I think the problem might be hidden in the fact that my Grass contains LOD which is connected to the actual source objects.
Is it possible that FP from the library cannot find the LOD somehow? When I open the main FP, containing the LODs, the names of objects are correct in the list of objects, but it's not correct in the "Custom object" section.