Tahm Kench W Bug
https://www.youtube.com/watch?v=Yx0oRmQjdQg&feature=youtu.be
As the description says, this bug has been a constant presence in all of my Tahm Kench matches since a couple patches ago. I wanna say it was patch 6.12 or 6.13 that this first started occurring. If you want, I can go through all my other replays and pull up dozens of occurrences of this same bug for research purposes. I thought 3 times in one 20 minute match should suffice, though.