As mentioned here,

http://www.reddit.com/r/leagueoflege..._still_bugged/

Vi's Q has a current bug. Occasionaly when you press Q, it will "charge" up while not showing the aimer for it, and you are forced to stand there doing nothing until it runs out. This has killed me many times, and has been there since her release and has seem to have gotten no attention, dispite seeing other forum posts on it.

Posted to Help & Support aswell, unsure where to post.
Any feedback/help i will be more likely to check the reddit,
Take Care! ~Crave

dnvm

point where u want it to go tada....put this in bug forums

really i've been playing vi for like the last week and this has never happened to me... like ever... can you reproduce how u do it? cause i have no idea how to get this to happen

This happened to me against Fiddle's fear I think

It has happened to me a lot since I play her in about half my current games. This post belongs in bug forum though.

It happen to me sometime but I am lucky it never happen during team fight and when I am gank.