Shaco Literally Disappears and Lux E

I cannot see cloud when he goes invisible and he is able to gank. I have map awareness and I notice the areas around me but I have played 2 games with this Demon Trickster and I can barely the orange fart. Another invisible trick is E ability; it throws me off in lane. The initiated cast is invisible and the are slow is barely visible. I think this some sort of bug. P.S My eye sight is fine and I am not a noob.