Zed living shadow/razor shuriken bug [Gameplay]

There is a problem with Zed ever since new summoner's rift launched. Sometimes when casting living shadow followed by razor shuriken, the mimic shuriken thrown by the shadow barely travels any distance at all (it appears to be about 1/3 of the intended cast range). I know that it is not simply a visual bug, since targets that are in the path of the spell after it disappears do not take any damage.

It's very common - I see it multiple times in most games, but I find this only happens during early levels, so perhaps it is an issue with early ranks of the razor shuriken spell, or with how Zed interacts with that specific section of the map in mid lane? Please help! when this starts happening this puts Zed players at a huge disadvantage until it stops.

Thanks!