GetHitResultUnderCursor with UCustomMeshComponent?

I have a UCustomMeshComponent (I created a box with SetCustomMeshTriangles) in an AActor. GetHitResultUnderCursor does not detect the custom mesh (nor the actor), why?

Reading this thread, it seems that I need to implement GetPhysicsTriMeshData.

I use UProceduralMeshComponent now, and it does detect the mesh.