Just played against this hell.
I know it's a bug, but it makes Lux completely unbearable to play against.The only skill I consistently saw from Lux was her Ultimate. Lucent Singularity (E) was invisible 100% of the time and allowed the enemy Lux to get so many kills simply because me and my team were walking into them at low health, not knowing they were there. In addition, her Q and W were also regularly invisible. They would appear every now and then, but for the most part, we'd be walking straight into a light binding and not know.
I think this may be my first post on the forums ever which I think means I'm not one to get hung up on this stuff, but...
Riot pls. Fix this issue quick or disable her until you can.