[BUG] Breaking blue buff so that it will never attack you when clearing it.

In some games the other day I found that if I walk from gromp to blue and attack it from the front with a ranged attack and right away pull down to in the direction of river and stand against the wall just right you can bug out blue between his minion and the wall so that he is just trying to walk to you but cant get to you and you can attack him for free no damage taken aside from the two small minions... who lets be honest don't really do damage... I linked above me trying to reproduce the bug in total it took me about 20 tries to make it happen but after i figured out how to do it correctly I could do it every time. However I could not cause the same effect on the blue side blue buff.

Edit: First time posting here the stream link I did is just a link to my stream I guess? But if you click the actual link it will take you to the VoD of me showing the bug.