Vi Q just stops working AGAIN [Gameplay]

This is the second time this has happened to me, the only difference is that the first time I was playing the gamemode ARAM on Howling Abyss and this time I was playing on Classic Mode, Summoners Rift, Blind Pick. Here is my First Bug Report:

I was Playing a Game of ARAM with the Character Vi and half way through the game my q or the move Vault Breaker stopped working I am not sure as to why, but since I couldn't use it for the rest of the game I thought it might be a pretty big bug if you would like to see the game for yourselves my user is ToastyImpulse.

1. Clicked on 'Play game'
2. Joined Solo on ARAM in Howling Abyss 5v5
3. Got the Champion Vi
4. Game Launch
5. Game Loaded
6. Started Playing
7. Got maybe 5 minutes in
8. My q or the Ability Vault Breaker stopped working and did not work for the rest of the game

Attachment(s) DxDiag.txt

This time around:

1. Clicked on 'Play Game'
2. Joined Classic on Summoners Rift 5v5, Blind Pick
3. Chose Champion Vi
4. Game Launched
5. Game Loaded
6. Started Playing
7. Maybe 30 minutes into Game
8. My Q or the Ability Vault Breaker stopped working and did not work for the rest of the game

If you want me to attach the files again please tell me how to do it, because I forget.