LODs not working correctly when added to GrassTypes. Works fine as its own static mesh?

Hi Im creating a desert scene and just going through all my assets LODs.
For some reason the LODs I have created for the desert plant work fine when dragged out from the content browser into the scene, but when they are applied to a ‘Landscape Grass Type’ the LOD starts does its own thing and sets LOD1 much further away.
It only seems to be an issue with this desert plant as the rocks in the scene are all part of the same ‘Landscape Grass Type’ and are working fine. Anyone have ideas?

LODs behave differently when the mesh is used as foliage.

It’s because they are no longer just static meshes, but hierarchical instanced static meshes. And, as such, the LODding happens in groups, and not necessarily at the same moment as it would happen for the single mesh.

Thank you for the response. I never knew this.
It’s a bit confusing as the rocks (added to the same Landscape Grass Type) are working exactly as planned?

Yes, I don’t know what the rules are, I’m afraid… I assume it depends on number of LODs, and the screen size ( and original size ) of the mesh.