Grass generating under and over the Landscape

Hello everyone, I am running into an issue with the grass on the landscape. Attached are examples… When there’s a change in the formation of the landscape, the grass auto-generates incorrectly on the surface. Sometimes loading under or over the landscape, creating a bubble of sorts. Was wondering if there’s any solution to this, or if it’s simply a bug with UE4. Thanks for the help y’all!