[GAMEPLAY]Master Yi's Q Cancels Dragon Attacks

Overview During spectating a friend in a game, I watched his jungler, Master Yi, attempt to take dragon. It seemed like a normal circumstance, but at 3 minutes 30 seconds in, I wondered how, and why, he was taking the dragon. He began fighting the dragon as normal, but right before the dragon attacked him, he used his Q on the dragon. After using the Q, Master Yi came out with no damage, the dragon had not attacked, and it was charging up for another attack. That process was repeated several times until Yi, at 4 minutes in, with no potions and a Stalker's Blade, was able to solo the dragon, taking about 400-500 damage, and getting out easily.

To Reproduce This

1. Go to the dragon
2. Fight the dragon, alone
3. Before the dragon attacks, use your Q
4. This should cancel the attack of the dragon, and it should be charging for a new one. Why is this a problem? This is very similar to Pantheon's ability to block the dragon attacks (although that was not a bug, it was still nerfed). Players can easily exploit this to take dragon quickly and easily as Master Yi, and I refuse to let players get ahead and take dragons due to this bug being. I ask that this is fixed immediately, and thank you for spending your time to read this.