That’s funny. I’m on 4.6 and currently having this problem. I have two blueprints extending some C++ (PickupA.h, PickupB.h) which both inherit a UStaticMeshComponent* from a parent class (Pickup.h) and one has a Pickup Mesh which is broken while the other’s Pickup Mesh is just fine. For one of the components I can’t set any of the defaults. I’ve restarted, recompiled, etc and nothing’s changed.