Warwick issues

So, this may be just me but I am curious to see if other players have similar issues and thoughts. I love Warwick, in both jg and sometimes in top. However, as of late, there seem to be some issues with him - such as ulting a singed, yet he flips you as you land - shouldnt you be unstopable, not to mention how is he flipping me whenever I ult him? Another amusing bug is me ulting a katarina when she jumps - I am clawing air while she is supressed how many feet away. Another issue, and tbh is the primary purpose of this thread, is the Q. Sometimes it will not go off at all, despite me spamming it withing range of the enemy (in a melee fight). The Q simply will not activate. Another issue that has been prevalent since Warwick's release is the way his Q works. Mana cost wise, I see no issue. The problem is that the Q costs mana THE MOMENT the animation starts. Wether or not it connects doesn't matter, as it goes on CD and costs the mana. I think it should cost mana and go on cd if it actually connects - to many times I have bitten a minion and it dies the second I press Q. I don't get a heal or dmg off, yet I lose mana and my q.

Just my thoughts, I think the bugs should be ironed out, and maybe the way his q works to be tuned.