Anivia's new Flash-Frost-Indicator : anywhere, BUT where it supposed to be

In Patch 4.18 received new STUNNING INDICATORS : Flash Frost now has a cast indicator to show stun range

I noticed that it has a positioning bug sometimes and this is very irritating when normally the indicator sits at the tip of your long range indicator arrow and now flies around your champion. I tried to force this bug and I got it constantly after spinning around my mouse Indicator several times. After that and sometimes even without that the stun range indicator flies around and is anywhere, but where it supposed to be :/

Please fix this bug, so that this very irritating problem disappears and won't bother any player anymore!