Olaf E glitch/bad mechanic
So I have noticed a bug/mechanic, as I have been playing a lot of Olaf recently, that if you lose sight of a champ as you are swinging your E (as in already clicked the enemy and the animation is going through), the E will not connect. It it will not go on cooldown though. It is kind of upsetting as I just played a game where this happened twice in the same fight and the yorick lived because of it (once from walking into 1 bush, and the second by flashing to the next).
Now it seems this almost seems like a mechanic of the E as it does not go on cooldown, but even still, a lot of other champs do not have this mechanic designed into their kits, so it almost seems like a targeted hit to Olaf rather than a fair play mechanic.
Is this a bug or a mechanic? Any chance this could be improved?