[GAMEPLAY] Fiora R-(Grand Challenge) Bug

Hi Guys, im having a bug with Fioras Ulti. Im Playing her a lot at the Moment and it happend to me multiple times. So If u cast R on an enemy Champion while being in Melee Range and autoattack after, the AA doenst proc any vital. Due to the Fact that Fioras R is 360 Degree, the Autoattack should always proc a vital 100%. Im kinda upset, cause i lost pretty much 1 vs 1s to this bug.