sions Q is interrupted even with banshee's veil

Server: BR(maybe all of them) • Type of Bug: in Game Bug • Description: sion's Q is interupted by CC even if he has banshee's veil passive (tested with janna knock up, elise stun, cho's knock up and silence •Video / Screenshot: video link :https://www.youtube.com/watch?v=7I4vo7v4MFk&feature=youtu.be • Steps to reproduce: start charging sion's Q with banshee's veill passive, and recive some tipe of CC • Expected result: sion should continue charging his Q because banshee's veil makes him not take CC • Observed result: sion's Q is interrupted • reproduction rate 100% • System specs: not nescessary

i also posted this on reddit