Can't see the material on the mesh if applied using foliage

Hello ,

I have some meshes that I exported from megascans and they work very nicely if I add them using normal drag and drop. so, I just drag the texture and drop it on the mesh. however, if I put the meshes in Foliage, they come in with no textures displaying even tho I checked the textures on it, and it shows that the mesh has a texture but nothing is being shown. I tried reimporting multipile times but no use.

any idea what is happening ?
Thanky you.