Lux's E is invisible

As the title states, her E is invisible. In my last game we were up against one, and none of them seemed to notice or acknowledge it when my team mentioned it, so I assume it is only for the opposing team. You could still see the distortion it creates when she throws it, and sometimes see the red line around it when it lands, but other than that it was completely invisible.

And no, this isn't just me accusing it of being invisible because I got hit by it without noticing. Every member on my team confirmed it whenever I mentioned it, and we won that game anyway so I'm just just butthurt or anything.

One of my teammates also mentioned that her Q was invisible sometimes, but I never noticed that so it may just be that player blaming the game for getting snared.

This really needs to be addressed or fixed, because it can cause some serious gamplay issues and would be very easy to exploit.