Garen's Q Animation GAMEPLAY

Ok so basically i play Garen a lot (as my name suggests) and i was casually watching a video from my boi TheLoLHounds and he included a clip of Garen moonwalking at 5:37. This actually happens to me in game, its not very common but common enough for me to bring it up and make a post over here on the boards. Before this video i thought it was a visual bug on my side but i guess not? Anyway, i just wanted to let you guys know. (side note, if you guys even get the chance to play Garen and get this bug, its pretty surreal. Especially in team fights lol)

~Jusice