Having a glitch for medium and large rovers in multiplayer on PC since 0.9 went out. Only the host can put things on top of a rover. Guests are only able to place things on the side slots. If you fill up the side slots with items, it still will not allow you to place anything on top of the rover. This problem does not extend to objects placed on Storage. Guests can place things on those no problemo. The issue is purely with the top slots on the medium and large rovers.